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Message-ID: <1344646241.13142.227.camel@deadeye.wl.decadent.org.uk>
Date: Sat, 11 Aug 2012 01:50:41 +0100
From: Ben Hutchings <ben@...adent.org.uk>
To: linux-kernel@...r.kernel.org
Cc: Andrew Morton <akpm@...ux-foundation.org>,
torvalds@...ux-foundation.org, Jiri Slaby <jslaby@...e.cz>,
stable@...r.kernel.org, lwn@....net
Subject: Re: Linux 3.2.27
diff --git a/Documentation/sound/alsa/HD-Audio-Models.txt b/Documentation/sound/alsa/HD-Audio-Models.txt
index edad99a..69820b2 100644
--- a/Documentation/sound/alsa/HD-Audio-Models.txt
+++ b/Documentation/sound/alsa/HD-Audio-Models.txt
@@ -60,10 +60,11 @@ ALC267/268
==========
N/A
-ALC269
+ALC269/270/275/276/280/282
======
laptop-amic Laptops with analog-mic input
laptop-dmic Laptops with digital-mic input
+ lenovo-dock Enables docking station I/O for some Lenovos
ALC662/663/272
==============
diff --git a/Documentation/stable_kernel_rules.txt b/Documentation/stable_kernel_rules.txt
index e1f856b..22bf11b 100644
--- a/Documentation/stable_kernel_rules.txt
+++ b/Documentation/stable_kernel_rules.txt
@@ -1,4 +1,4 @@
-Everything you ever wanted to know about Linux 2.6 -stable releases.
+Everything you ever wanted to know about Linux -stable releases.
Rules on what kind of patches are accepted, and which ones are not, into the
"-stable" tree:
@@ -41,10 +41,10 @@ Procedure for submitting patches to the -stable tree:
cherry-picked than this can be specified in the following format in
the sign-off area:
- Cc: <stable@...r.kernel.org> # .32.x: a1f84a3: sched: Check for idle
- Cc: <stable@...r.kernel.org> # .32.x: 1b9508f: sched: Rate-limit newidle
- Cc: <stable@...r.kernel.org> # .32.x: fd21073: sched: Fix affinity logic
- Cc: <stable@...r.kernel.org> # .32.x
+ Cc: <stable@...r.kernel.org> # 3.3.x: a1f84a3: sched: Check for idle
+ Cc: <stable@...r.kernel.org> # 3.3.x: 1b9508f: sched: Rate-limit newidle
+ Cc: <stable@...r.kernel.org> # 3.3.x: fd21073: sched: Fix affinity logic
+ Cc: <stable@...r.kernel.org> # 3.3.x
Signed-off-by: Ingo Molnar <mingo@...e.hu>
The tag sequence has the meaning of:
@@ -78,6 +78,15 @@ Review cycle:
security kernel team, and not go through the normal review cycle.
Contact the kernel security team for more details on this procedure.
+Trees:
+
+ - The queues of patches, for both completed versions and in progress
+ versions can be found at:
+ http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git
+ - The finalized and tagged releases of all stable kernels can be found
+ in separate branches per version at:
+ http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git
+
Review committee:
diff --git a/Makefile b/Makefile
index fa5acc83..bdf851f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 3
PATCHLEVEL = 2
-SUBLEVEL = 26
+SUBLEVEL = 27
EXTRAVERSION =
NAME = Saber-toothed Squirrel
diff --git a/arch/arm/include/asm/mutex.h b/arch/arm/include/asm/mutex.h
index 93226cf..b1479fd 100644
--- a/arch/arm/include/asm/mutex.h
+++ b/arch/arm/include/asm/mutex.h
@@ -7,121 +7,10 @@
*/
#ifndef _ASM_MUTEX_H
#define _ASM_MUTEX_H
-
-#if __LINUX_ARM_ARCH__ < 6
-/* On pre-ARMv6 hardware the swp based implementation is the most efficient. */
-# include <asm-generic/mutex-xchg.h>
-#else
-
/*
- * Attempting to lock a mutex on ARMv6+ can be done with a bastardized
- * atomic decrement (it is not a reliable atomic decrement but it satisfies
- * the defined semantics for our purpose, while being smaller and faster
- * than a real atomic decrement or atomic swap. The idea is to attempt
- * decrementing the lock value only once. If once decremented it isn't zero,
- * or if its store-back fails due to a dispute on the exclusive store, we
- * simply bail out immediately through the slow path where the lock will be
- * reattempted until it succeeds.
+ * On pre-ARMv6 hardware this results in a swp-based implementation,
+ * which is the most efficient. For ARMv6+, we emit a pair of exclusive
+ * accesses instead.
*/
-static inline void
-__mutex_fastpath_lock(atomic_t *count, void (*fail_fn)(atomic_t *))
-{
- int __ex_flag, __res;
-
- __asm__ (
-
- "ldrex %0, [%2] \n\t"
- "sub %0, %0, #1 \n\t"
- "strex %1, %0, [%2] "
-
- : "=&r" (__res), "=&r" (__ex_flag)
- : "r" (&(count)->counter)
- : "cc","memory" );
-
- __res |= __ex_flag;
- if (unlikely(__res != 0))
- fail_fn(count);
-}
-
-static inline int
-__mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *))
-{
- int __ex_flag, __res;
-
- __asm__ (
-
- "ldrex %0, [%2] \n\t"
- "sub %0, %0, #1 \n\t"
- "strex %1, %0, [%2] "
-
- : "=&r" (__res), "=&r" (__ex_flag)
- : "r" (&(count)->counter)
- : "cc","memory" );
-
- __res |= __ex_flag;
- if (unlikely(__res != 0))
- __res = fail_fn(count);
- return __res;
-}
-
-/*
- * Same trick is used for the unlock fast path. However the original value,
- * rather than the result, is used to test for success in order to have
- * better generated assembly.
- */
-static inline void
-__mutex_fastpath_unlock(atomic_t *count, void (*fail_fn)(atomic_t *))
-{
- int __ex_flag, __res, __orig;
-
- __asm__ (
-
- "ldrex %0, [%3] \n\t"
- "add %1, %0, #1 \n\t"
- "strex %2, %1, [%3] "
-
- : "=&r" (__orig), "=&r" (__res), "=&r" (__ex_flag)
- : "r" (&(count)->counter)
- : "cc","memory" );
-
- __orig |= __ex_flag;
- if (unlikely(__orig != 0))
- fail_fn(count);
-}
-
-/*
- * If the unlock was done on a contended lock, or if the unlock simply fails
- * then the mutex remains locked.
- */
-#define __mutex_slowpath_needs_to_unlock() 1
-
-/*
- * For __mutex_fastpath_trylock we use another construct which could be
- * described as a "single value cmpxchg".
- *
- * This provides the needed trylock semantics like cmpxchg would, but it is
- * lighter and less generic than a true cmpxchg implementation.
- */
-static inline int
-__mutex_fastpath_trylock(atomic_t *count, int (*fail_fn)(atomic_t *))
-{
- int __ex_flag, __res, __orig;
-
- __asm__ (
-
- "1: ldrex %0, [%3] \n\t"
- "subs %1, %0, #1 \n\t"
- "strexeq %2, %1, [%3] \n\t"
- "movlt %0, #0 \n\t"
- "cmpeq %2, #0 \n\t"
- "bgt 1b "
-
- : "=&r" (__orig), "=&r" (__res), "=&r" (__ex_flag)
- : "r" (&count->counter)
- : "cc", "memory" );
-
- return __orig;
-}
-
-#endif
+#include <asm-generic/mutex-xchg.h>
#endif
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index b145f16..ece0996 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -242,6 +242,19 @@ svc_preempt:
b 1b
#endif
+__und_fault:
+ @ Correct the PC such that it is pointing at the instruction
+ @ which caused the fault. If the faulting instruction was ARM
+ @ the PC will be pointing at the next instruction, and have to
+ @ subtract 4. Otherwise, it is Thumb, and the PC will be
+ @ pointing at the second half of the Thumb instruction. We
+ @ have to subtract 2.
+ ldr r2, [r0, #S_PC]
+ sub r2, r2, r1
+ str r2, [r0, #S_PC]
+ b do_undefinstr
+ENDPROC(__und_fault)
+
.align 5
__und_svc:
#ifdef CONFIG_KPROBES
@@ -259,25 +272,32 @@ __und_svc:
@
@ r0 - instruction
@
-#ifndef CONFIG_THUMB2_KERNEL
+#ifndef CONFIG_THUMB2_KERNEL
ldr r0, [r4, #-4]
#else
+ mov r1, #2
ldrh r0, [r4, #-2] @ Thumb instruction at LR - 2
cmp r0, #0xe800 @ 32-bit instruction if xx >= 0
- ldrhhs r9, [r4] @ bottom 16 bits
- orrhs r0, r9, r0, lsl #16
+ blo __und_svc_fault
+ ldrh r9, [r4] @ bottom 16 bits
+ add r4, r4, #2
+ str r4, [sp, #S_PC]
+ orr r0, r9, r0, lsl #16
#endif
- adr r9, BSYM(1f)
+ adr r9, BSYM(__und_svc_finish)
mov r2, r4
bl call_fpe
+ mov r1, #4 @ PC correction to apply
+__und_svc_fault:
mov r0, sp @ struct pt_regs *regs
- bl do_undefinstr
+ bl __und_fault
@
@ IRQs off again before pulling preserved data off the stack
@
-1: disable_irq_notrace
+__und_svc_finish:
+ disable_irq_notrace
@
@ restore SPSR and restart the instruction
@@ -421,25 +441,33 @@ __und_usr:
mov r2, r4
mov r3, r5
+ @ r2 = regs->ARM_pc, which is either 2 or 4 bytes ahead of the
+ @ faulting instruction depending on Thumb mode.
+ @ r3 = regs->ARM_cpsr
@
- @ fall through to the emulation code, which returns using r9 if
- @ it has emulated the instruction, or the more conventional lr
- @ if we are to treat this as a real undefined instruction
- @
- @ r0 - instruction
+ @ The emulation code returns using r9 if it has emulated the
+ @ instruction, or the more conventional lr if we are to treat
+ @ this as a real undefined instruction
@
adr r9, BSYM(ret_from_exception)
- adr lr, BSYM(__und_usr_unknown)
+
tst r3, #PSR_T_BIT @ Thumb mode?
- itet eq @ explicit IT needed for the 1f label
- subeq r4, r2, #4 @ ARM instr at LR - 4
- subne r4, r2, #2 @ Thumb instr at LR - 2
-1: ldreqt r0, [r4]
+ bne __und_usr_thumb
+ sub r4, r2, #4 @ ARM instr at LR - 4
+1: ldrt r0, [r4]
#ifdef CONFIG_CPU_ENDIAN_BE8
- reveq r0, r0 @ little endian instruction
+ rev r0, r0 @ little endian instruction
#endif
- beq call_fpe
+ @ r0 = 32-bit ARM instruction which caused the exception
+ @ r2 = PC value for the following instruction (:= regs->ARM_pc)
+ @ r4 = PC value for the faulting instruction
+ @ lr = 32-bit undefined instruction function
+ adr lr, BSYM(__und_usr_fault_32)
+ b call_fpe
+
+__und_usr_thumb:
@ Thumb instruction
+ sub r4, r2, #2 @ First half of thumb instr at LR - 2
#if CONFIG_ARM_THUMB && __LINUX_ARM_ARCH__ >= 6 && CONFIG_CPU_V7
/*
* Thumb-2 instruction handling. Note that because pre-v6 and >= v6 platforms
@@ -453,7 +481,7 @@ __und_usr:
ldr r5, .LCcpu_architecture
ldr r5, [r5]
cmp r5, #CPU_ARCH_ARMv7
- blo __und_usr_unknown
+ blo __und_usr_fault_16 @ 16bit undefined instruction
/*
* The following code won't get run unless the running CPU really is v7, so
* coding round the lack of ldrht on older arches is pointless. Temporarily
@@ -461,15 +489,18 @@ __und_usr:
*/
.arch armv6t2
#endif
-2:
- ARM( ldrht r5, [r4], #2 )
- THUMB( ldrht r5, [r4] )
- THUMB( add r4, r4, #2 )
+2: ldrht r5, [r4]
cmp r5, #0xe800 @ 32bit instruction if xx != 0
- blo __und_usr_unknown
-3: ldrht r0, [r4]
+ blo __und_usr_fault_16 @ 16bit undefined instruction
+3: ldrht r0, [r2]
add r2, r2, #2 @ r2 is PC + 2, make it PC + 4
+ str r2, [sp, #S_PC] @ it's a 2x16bit instr, update
orr r0, r0, r5, lsl #16
+ adr lr, BSYM(__und_usr_fault_32)
+ @ r0 = the two 16-bit Thumb instructions which caused the exception
+ @ r2 = PC value for the following Thumb instruction (:= regs->ARM_pc)
+ @ r4 = PC value for the first 16-bit Thumb instruction
+ @ lr = 32bit undefined instruction function
#if __LINUX_ARM_ARCH__ < 7
/* If the target arch was overridden, change it back: */
@@ -480,17 +511,13 @@ __und_usr:
#endif
#endif /* __LINUX_ARM_ARCH__ < 7 */
#else /* !(CONFIG_ARM_THUMB && __LINUX_ARM_ARCH__ >= 6 && CONFIG_CPU_V7) */
- b __und_usr_unknown
+ b __und_usr_fault_16
#endif
- UNWIND(.fnend )
+ UNWIND(.fnend)
ENDPROC(__und_usr)
- @
- @ fallthrough to call_fpe
- @
-
/*
- * The out of line fixup for the ldrt above.
+ * The out of line fixup for the ldrt instructions above.
*/
.pushsection .fixup, "ax"
4: mov pc, r9
@@ -521,11 +548,12 @@ ENDPROC(__und_usr)
* NEON handler code.
*
* Emulators may wish to make use of the following registers:
- * r0 = instruction opcode.
- * r2 = PC+4
+ * r0 = instruction opcode (32-bit ARM or two 16-bit Thumb)
+ * r2 = PC value to resume execution after successful emulation
* r9 = normal "successful" return address
- * r10 = this threads thread_info structure.
+ * r10 = this threads thread_info structure
* lr = unrecognised instruction return address
+ * IRQs disabled, FIQs enabled.
*/
@
@ Fall-through from Thumb-2 __und_usr
@@ -660,12 +688,17 @@ ENTRY(no_fp)
mov pc, lr
ENDPROC(no_fp)
-__und_usr_unknown:
- enable_irq
+__und_usr_fault_32:
+ mov r1, #4
+ b 1f
+__und_usr_fault_16:
+ mov r1, #2
+1: enable_irq
mov r0, sp
adr lr, BSYM(ret_from_exception)
- b do_undefinstr
-ENDPROC(__und_usr_unknown)
+ b __und_fault
+ENDPROC(__und_usr_fault_32)
+ENDPROC(__und_usr_fault_16)
.align 5
__pabt_usr:
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 3d0c6fb..e68d251 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -125,6 +125,7 @@ void arm_machine_restart(char mode, const char *cmd)
*/
mdelay(1000);
printk("Reboot failed -- System halted\n");
+ local_irq_disable();
while (1);
}
@@ -240,6 +241,7 @@ void machine_shutdown(void)
void machine_halt(void)
{
machine_shutdown();
+ local_irq_disable();
while (1);
}
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 160cb16..8380bd1 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -362,18 +362,10 @@ static int call_undef_hook(struct pt_regs *regs, unsigned int instr)
asmlinkage void __exception do_undefinstr(struct pt_regs *regs)
{
- unsigned int correction = thumb_mode(regs) ? 2 : 4;
unsigned int instr;
siginfo_t info;
void __user *pc;
- /*
- * According to the ARM ARM, PC is 2 or 4 bytes ahead,
- * depending whether we're in Thumb mode or not.
- * Correct this offset.
- */
- regs->ARM_pc -= correction;
-
pc = (void __user *)instruction_pointer(regs);
if (processor_mode(regs) == SVC_MODE) {
diff --git a/arch/arm/mm/tlb-v7.S b/arch/arm/mm/tlb-v7.S
index 845f461..c202113 100644
--- a/arch/arm/mm/tlb-v7.S
+++ b/arch/arm/mm/tlb-v7.S
@@ -38,11 +38,19 @@ ENTRY(v7wbi_flush_user_tlb_range)
dsb
mov r0, r0, lsr #PAGE_SHIFT @ align address
mov r1, r1, lsr #PAGE_SHIFT
+#ifdef CONFIG_ARM_ERRATA_720789
+ mov r3, #0
+#else
asid r3, r3 @ mask ASID
+#endif
orr r0, r3, r0, lsl #PAGE_SHIFT @ Create initial MVA
mov r1, r1, lsl #PAGE_SHIFT
1:
+#ifdef CONFIG_ARM_ERRATA_720789
+ ALT_SMP(mcr p15, 0, r0, c8, c3, 3) @ TLB invalidate U MVA all ASID (shareable)
+#else
ALT_SMP(mcr p15, 0, r0, c8, c3, 1) @ TLB invalidate U MVA (shareable)
+#endif
ALT_UP(mcr p15, 0, r0, c8, c7, 1) @ TLB invalidate U MVA
add r0, r0, #PAGE_SZ
@@ -67,7 +75,11 @@ ENTRY(v7wbi_flush_kern_tlb_range)
mov r0, r0, lsl #PAGE_SHIFT
mov r1, r1, lsl #PAGE_SHIFT
1:
+#ifdef CONFIG_ARM_ERRATA_720789
+ ALT_SMP(mcr p15, 0, r0, c8, c3, 3) @ TLB invalidate U MVA all ASID (shareable)
+#else
ALT_SMP(mcr p15, 0, r0, c8, c3, 1) @ TLB invalidate U MVA (shareable)
+#endif
ALT_UP(mcr p15, 0, r0, c8, c7, 1) @ TLB invalidate U MVA
add r0, r0, #PAGE_SZ
cmp r0, r1
diff --git a/arch/arm/vfp/entry.S b/arch/arm/vfp/entry.S
index 4fa9903..cc926c9 100644
--- a/arch/arm/vfp/entry.S
+++ b/arch/arm/vfp/entry.S
@@ -7,18 +7,20 @@
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
- *
- * Basic entry code, called from the kernel's undefined instruction trap.
- * r0 = faulted instruction
- * r5 = faulted PC+4
- * r9 = successful return
- * r10 = thread_info structure
- * lr = failure return
*/
#include <asm/thread_info.h>
#include <asm/vfpmacros.h>
#include "../kernel/entry-header.S"
+@ VFP entry point.
+@
+@ r0 = instruction opcode (32-bit ARM or two 16-bit Thumb)
+@ r2 = PC value to resume execution after successful emulation
+@ r9 = normal "successful" return address
+@ r10 = this threads thread_info structure
+@ lr = unrecognised instruction return address
+@ IRQs disabled.
+@
ENTRY(do_vfp)
#ifdef CONFIG_PREEMPT
ldr r4, [r10, #TI_PREEMPT] @ get preempt count
diff --git a/arch/arm/vfp/vfphw.S b/arch/arm/vfp/vfphw.S
index 2d30c7f..3a0efaa 100644
--- a/arch/arm/vfp/vfphw.S
+++ b/arch/arm/vfp/vfphw.S
@@ -61,13 +61,13 @@
@ VFP hardware support entry point.
@
-@ r0 = faulted instruction
-@ r2 = faulted PC+4
-@ r9 = successful return
+@ r0 = instruction opcode (32-bit ARM or two 16-bit Thumb)
+@ r2 = PC value to resume execution after successful emulation
+@ r9 = normal "successful" return address
@ r10 = vfp_state union
@ r11 = CPU number
-@ lr = failure return
-
+@ lr = unrecognised instruction return address
+@ IRQs enabled.
ENTRY(vfp_support_entry)
DBGSTR3 "instr %08x pc %08x state %p", r0, r2, r10
@@ -161,9 +161,12 @@ vfp_hw_state_valid:
@ exception before retrying branch
@ out before setting an FPEXC that
@ stops us reading stuff
- VFPFMXR FPEXC, r1 @ restore FPEXC last
- sub r2, r2, #4
- str r2, [sp, #S_PC] @ retry the instruction
+ VFPFMXR FPEXC, r1 @ Restore FPEXC last
+ sub r2, r2, #4 @ Retry current instruction - if Thumb
+ str r2, [sp, #S_PC] @ mode it's two 16-bit instructions,
+ @ else it's one 32-bit instruction, so
+ @ always subtract 4 from the following
+ @ instruction address.
#ifdef CONFIG_PREEMPT
get_thread_info r10
ldr r4, [r10, #TI_PREEMPT] @ get preempt count
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index 8ea07e4..ad83dad 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -453,10 +453,16 @@ static int vfp_pm_suspend(void)
/* disable, just in case */
fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_EN);
+ } else if (vfp_current_hw_state[ti->cpu]) {
+#ifndef CONFIG_SMP
+ fmxr(FPEXC, fpexc | FPEXC_EN);
+ vfp_save_state(vfp_current_hw_state[ti->cpu], fpexc);
+ fmxr(FPEXC, fpexc);
+#endif
}
/* clear any information we had about last context state */
- memset(vfp_current_hw_state, 0, sizeof(vfp_current_hw_state));
+ vfp_current_hw_state[ti->cpu] = NULL;
return 0;
}
diff --git a/arch/ia64/include/asm/atomic.h b/arch/ia64/include/asm/atomic.h
index 3fad89e..2fc214b 100644
--- a/arch/ia64/include/asm/atomic.h
+++ b/arch/ia64/include/asm/atomic.h
@@ -18,8 +18,8 @@
#include <asm/system.h>
-#define ATOMIC_INIT(i) ((atomic_t) { (i) })
-#define ATOMIC64_INIT(i) ((atomic64_t) { (i) })
+#define ATOMIC_INIT(i) { (i) }
+#define ATOMIC64_INIT(i) { (i) }
#define atomic_read(v) (*(volatile int *)&(v)->counter)
#define atomic64_read(v) (*(volatile long *)&(v)->counter)
diff --git a/arch/m68k/include/asm/entry.h b/arch/m68k/include/asm/entry.h
index c3c5a86..8798ebc 100644
--- a/arch/m68k/include/asm/entry.h
+++ b/arch/m68k/include/asm/entry.h
@@ -33,8 +33,8 @@
/* the following macro is used when enabling interrupts */
#if defined(MACH_ATARI_ONLY)
- /* block out HSYNC on the atari */
-#define ALLOWINT (~0x400)
+ /* block out HSYNC = ipl 2 on the atari */
+#define ALLOWINT (~0x500)
#define MAX_NOINT_IPL 3
#else
/* portable version */
diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c
index 8623f8d..9a5932e 100644
--- a/arch/m68k/kernel/sys_m68k.c
+++ b/arch/m68k/kernel/sys_m68k.c
@@ -479,9 +479,13 @@ sys_atomic_cmpxchg_32(unsigned long newval, int oldval, int d3, int d4, int d5,
goto bad_access;
}
- mem_value = *mem;
+ /*
+ * No need to check for EFAULT; we know that the page is
+ * present and writable.
+ */
+ __get_user(mem_value, mem);
if (mem_value == oldval)
- *mem = newval;
+ __put_user(newval, mem);
pte_unmap_unlock(pte, ptl);
up_read(&mm->mmap_sem);
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index 5682f16..20f0e01 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -12,7 +12,6 @@
#include <asm/pgalloc.h>
#include <asm/uaccess.h>
#include <asm/tlbflush.h>
-#include <asm-generic/mm_hooks.h>
static inline int init_new_context(struct task_struct *tsk,
struct mm_struct *mm)
@@ -92,4 +91,17 @@ static inline void activate_mm(struct mm_struct *prev,
switch_mm(prev, next, current);
}
+static inline void arch_dup_mmap(struct mm_struct *oldmm,
+ struct mm_struct *mm)
+{
+#ifdef CONFIG_64BIT
+ if (oldmm->context.asce_limit < mm->context.asce_limit)
+ crst_table_downgrade(mm, oldmm->context.asce_limit);
+#endif
+}
+
+static inline void arch_exit_mmap(struct mm_struct *mm)
+{
+}
+
#endif /* __S390_MMU_CONTEXT_H */
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index 5f33d37..172550d 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -130,7 +130,9 @@ struct stack_frame {
regs->psw.mask = psw_user_bits | PSW_MASK_BA; \
regs->psw.addr = new_psw | PSW_ADDR_AMODE; \
regs->gprs[15] = new_stackp; \
+ __tlb_flush_mm(current->mm); \
crst_table_downgrade(current->mm, 1UL << 31); \
+ update_mm(current->mm, current); \
} while (0)
/* Forward declaration, a strange C thing */
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index b28aaa4..0fc0a7e 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -453,6 +453,7 @@ int __handle_fault(unsigned long uaddr, unsigned long pgm_int_code, int write)
struct pt_regs regs;
int access, fault;
+ /* Emulate a uaccess fault from kernel mode. */
regs.psw.mask = psw_kernel_bits | PSW_MASK_DAT | PSW_MASK_MCHECK;
if (!irqs_disabled())
regs.psw.mask |= PSW_MASK_IO | PSW_MASK_EXT;
@@ -461,12 +462,12 @@ int __handle_fault(unsigned long uaddr, unsigned long pgm_int_code, int write)
uaddr &= PAGE_MASK;
access = write ? VM_WRITE : VM_READ;
fault = do_exception(®s, access, uaddr | 2);
- if (unlikely(fault)) {
- if (fault & VM_FAULT_OOM)
- return -EFAULT;
- else if (fault & VM_FAULT_SIGBUS)
- do_sigbus(®s, pgm_int_code, uaddr);
- }
+ /*
+ * Since the fault happened in kernel mode while performing a uaccess
+ * all we need to do now is emulating a fixup in case "fault" is not
+ * zero.
+ * For the calling uaccess functions this results always in -EFAULT.
+ */
return fault ? -EFAULT : 0;
}
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index a0155c0..c70b3d8 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -106,9 +106,15 @@ EXPORT_SYMBOL_GPL(arch_pick_mmap_layout);
int s390_mmap_check(unsigned long addr, unsigned long len)
{
+ int rc;
+
if (!is_compat_task() &&
- len >= TASK_SIZE && TASK_SIZE < (1UL << 53))
- return crst_table_upgrade(current->mm, 1UL << 53);
+ len >= TASK_SIZE && TASK_SIZE < (1UL << 53)) {
+ rc = crst_table_upgrade(current->mm, 1UL << 53);
+ if (rc)
+ return rc;
+ update_mm(current->mm, current);
+ }
return 0;
}
@@ -128,6 +134,7 @@ s390_get_unmapped_area(struct file *filp, unsigned long addr,
rc = crst_table_upgrade(mm, 1UL << 53);
if (rc)
return (unsigned long) rc;
+ update_mm(mm, current);
area = arch_get_unmapped_area(filp, addr, len, pgoff, flags);
}
return area;
@@ -150,6 +157,7 @@ s390_get_unmapped_area_topdown(struct file *filp, const unsigned long addr,
rc = crst_table_upgrade(mm, 1UL << 53);
if (rc)
return (unsigned long) rc;
+ update_mm(mm, current);
area = arch_get_unmapped_area_topdown(filp, addr, len,
pgoff, flags);
}
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index f8ceac4..f8e92f8 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -97,7 +97,6 @@ repeat:
crst_table_free(mm, table);
if (mm->context.asce_limit < limit)
goto repeat;
- update_mm(mm, current);
return 0;
}
@@ -105,9 +104,6 @@ void crst_table_downgrade(struct mm_struct *mm, unsigned long limit)
{
pgd_t *pgd;
- if (mm->context.asce_limit <= limit)
- return;
- __tlb_flush_mm(mm);
while (mm->context.asce_limit > limit) {
pgd = mm->pgd;
switch (pgd_val(*pgd) & _REGION_ENTRY_TYPE_MASK) {
@@ -130,7 +126,6 @@ void crst_table_downgrade(struct mm_struct *mm, unsigned long limit)
mm->task_size = mm->context.asce_limit;
crst_table_free(mm, (unsigned long *) pgd);
}
- update_mm(mm, current);
}
#endif
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index 1f84794..73ef56c 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -219,7 +219,7 @@ void __init arch_init_ideal_nops(void)
ideal_nops = intel_nops;
#endif
}
-
+ break;
default:
#ifdef CONFIG_X86_64
ideal_nops = k8_nops;
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 1b267e7..00a0385 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -686,6 +686,7 @@ int m2p_add_override(unsigned long mfn, struct page *page,
unsigned long uninitialized_var(address);
unsigned level;
pte_t *ptep = NULL;
+ int ret = 0;
pfn = page_to_pfn(page);
if (!PageHighMem(page)) {
@@ -721,6 +722,24 @@ int m2p_add_override(unsigned long mfn, struct page *page,
list_add(&page->lru, &m2p_overrides[mfn_hash(mfn)]);
spin_unlock_irqrestore(&m2p_override_lock, flags);
+ /* p2m(m2p(mfn)) == mfn: the mfn is already present somewhere in
+ * this domain. Set the FOREIGN_FRAME_BIT in the p2m for the other
+ * pfn so that the following mfn_to_pfn(mfn) calls will return the
+ * pfn from the m2p_override (the backend pfn) instead.
+ * We need to do this because the pages shared by the frontend
+ * (xen-blkfront) can be already locked (lock_page, called by
+ * do_read_cache_page); when the userspace backend tries to use them
+ * with direct_IO, mfn_to_pfn returns the pfn of the frontend, so
+ * do_blockdev_direct_IO is going to try to lock the same pages
+ * again resulting in a deadlock.
+ * As a side effect get_user_pages_fast might not be safe on the
+ * frontend pages while they are being shared with the backend,
+ * because mfn_to_pfn (that ends up being called by GUPF) will
+ * return the backend pfn rather than the frontend pfn. */
+ ret = __get_user(pfn, &machine_to_phys_mapping[mfn]);
+ if (ret == 0 && get_phys_to_machine(pfn) == mfn)
+ set_phys_to_machine(pfn, FOREIGN_FRAME(mfn));
+
return 0;
}
EXPORT_SYMBOL_GPL(m2p_add_override);
@@ -732,6 +751,7 @@ int m2p_remove_override(struct page *page, bool clear_pte)
unsigned long uninitialized_var(address);
unsigned level;
pte_t *ptep = NULL;
+ int ret = 0;
pfn = page_to_pfn(page);
mfn = get_phys_to_machine(pfn);
@@ -801,6 +821,22 @@ int m2p_remove_override(struct page *page, bool clear_pte)
} else
set_phys_to_machine(pfn, page->index);
+ /* p2m(m2p(mfn)) == FOREIGN_FRAME(mfn): the mfn is already present
+ * somewhere in this domain, even before being added to the
+ * m2p_override (see comment above in m2p_add_override).
+ * If there are no other entries in the m2p_override corresponding
+ * to this mfn, then remove the FOREIGN_FRAME_BIT from the p2m for
+ * the original pfn (the one shared by the frontend): the backend
+ * cannot do any IO on this page anymore because it has been
+ * unshared. Removing the FOREIGN_FRAME_BIT from the p2m entry of
+ * the original pfn causes mfn_to_pfn(mfn) to return the frontend
+ * pfn again. */
+ mfn &= ~FOREIGN_FRAME_BIT;
+ ret = __get_user(pfn, &machine_to_phys_mapping[mfn]);
+ if (ret == 0 && get_phys_to_machine(pfn) == FOREIGN_FRAME(mfn) &&
+ m2p_find_override(mfn) == NULL)
+ set_phys_to_machine(pfn, mfn);
+
return 0;
}
EXPORT_SYMBOL_GPL(m2p_remove_override);
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 9955a53..c864add 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -4369,8 +4369,14 @@ out_unreg_blkdev:
out_put_disk:
while (dr--) {
del_timer_sync(&motor_off_timer[dr]);
- if (disks[dr]->queue)
+ if (disks[dr]->queue) {
blk_cleanup_queue(disks[dr]->queue);
+ /*
+ * put_disk() is not paired with add_disk() and
+ * will put queue reference one extra time. fix it.
+ */
+ disks[dr]->queue = NULL;
+ }
put_disk(disks[dr]);
}
return err;
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index e46f2f7..650a308 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -20,8 +20,6 @@ struct workqueue_struct *virtblk_wq;
struct virtio_blk
{
- spinlock_t lock;
-
struct virtio_device *vdev;
struct virtqueue *vq;
@@ -62,7 +60,7 @@ static void blk_done(struct virtqueue *vq)
unsigned int len;
unsigned long flags;
- spin_lock_irqsave(&vblk->lock, flags);
+ spin_lock_irqsave(vblk->disk->queue->queue_lock, flags);
while ((vbr = virtqueue_get_buf(vblk->vq, &len)) != NULL) {
int error;
@@ -97,7 +95,7 @@ static void blk_done(struct virtqueue *vq)
}
/* In case queue is stopped waiting for more buffers. */
blk_start_queue(vblk->disk->queue);
- spin_unlock_irqrestore(&vblk->lock, flags);
+ spin_unlock_irqrestore(vblk->disk->queue->queue_lock, flags);
}
static bool do_req(struct request_queue *q, struct virtio_blk *vblk,
@@ -384,7 +382,6 @@ static int __devinit virtblk_probe(struct virtio_device *vdev)
}
INIT_LIST_HEAD(&vblk->reqs);
- spin_lock_init(&vblk->lock);
vblk->vdev = vdev;
vblk->sg_elems = sg_elems;
sg_init_table(vblk->sg, vblk->sg_elems);
@@ -410,7 +407,7 @@ static int __devinit virtblk_probe(struct virtio_device *vdev)
goto out_mempool;
}
- q = vblk->disk->queue = blk_init_queue(do_virtblk_request, &vblk->lock);
+ q = vblk->disk->queue = blk_init_queue(do_virtblk_request, NULL);
if (!q) {
err = -ENOMEM;
goto out_put_disk;
diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index 5c0d96a..b12ffea 100644
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -284,7 +284,7 @@ mspec_mmap(struct file *file, struct vm_area_struct *vma,
vdata->flags = flags;
vdata->type = type;
spin_lock_init(&vdata->lock);
- vdata->refcnt = ATOMIC_INIT(1);
+ atomic_set(&vdata->refcnt, 1);
vma->vm_private_data = vdata;
vma->vm_flags |= (VM_IO | VM_RESERVED | VM_PFNMAP | VM_DONTEXPAND);
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 6035ab8..631d4f6 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -125,21 +125,26 @@
* The current exported interfaces for gathering environmental noise
* from the devices are:
*
+ * void add_device_randomness(const void *buf, unsigned int size);
* void add_input_randomness(unsigned int type, unsigned int code,
* unsigned int value);
- * void add_interrupt_randomness(int irq);
+ * void add_interrupt_randomness(int irq, int irq_flags);
* void add_disk_randomness(struct gendisk *disk);
*
+ * add_device_randomness() is for adding data to the random pool that
+ * is likely to differ between two devices (or possibly even per boot).
+ * This would be things like MAC addresses or serial numbers, or the
+ * read-out of the RTC. This does *not* add any actual entropy to the
+ * pool, but it initializes the pool to different values for devices
+ * that might otherwise be identical and have very little entropy
+ * available to them (particularly common in the embedded world).
+ *
* add_input_randomness() uses the input layer interrupt timing, as well as
* the event type information from the hardware.
*
- * add_interrupt_randomness() uses the inter-interrupt timing as random
- * inputs to the entropy pool. Note that not all interrupts are good
- * sources of randomness! For example, the timer interrupts is not a
- * good choice, because the periodicity of the interrupts is too
- * regular, and hence predictable to an attacker. Network Interface
- * Controller interrupts are a better measure, since the timing of the
- * NIC interrupts are more unpredictable.
+ * add_interrupt_randomness() uses the interrupt timing as random
+ * inputs to the entropy pool. Using the cycle counters and the irq source
+ * as inputs, it feeds the randomness roughly once a second.
*
* add_disk_randomness() uses what amounts to the seek time of block
* layer request events, on a per-disk_devt basis, as input to the
@@ -248,6 +253,8 @@
#include <linux/percpu.h>
#include <linux/cryptohash.h>
#include <linux/fips.h>
+#include <linux/ptrace.h>
+#include <linux/kmemcheck.h>
#ifdef CONFIG_GENERIC_HARDIRQS
# include <linux/irq.h>
@@ -256,6 +263,7 @@
#include <asm/processor.h>
#include <asm/uaccess.h>
#include <asm/irq.h>
+#include <asm/irq_regs.h>
#include <asm/io.h>
/*
@@ -266,6 +274,8 @@
#define SEC_XFER_SIZE 512
#define EXTRACT_SIZE 10
+#define LONGS(x) (((x) + sizeof(unsigned long) - 1)/sizeof(unsigned long))
+
/*
* The minimum number of bits of entropy before we wake up a read on
* /dev/random. Should be enough to do a significant reseed.
@@ -420,8 +430,10 @@ struct entropy_store {
/* read-write data: */
spinlock_t lock;
unsigned add_ptr;
+ unsigned input_rotate;
int entropy_count;
- int input_rotate;
+ int entropy_total;
+ unsigned int initialized:1;
__u8 last_data[EXTRACT_SIZE];
};
@@ -454,6 +466,10 @@ static struct entropy_store nonblocking_pool = {
.pool = nonblocking_pool_data
};
+static __u32 const twist_table[8] = {
+ 0x00000000, 0x3b6e20c8, 0x76dc4190, 0x4db26158,
+ 0xedb88320, 0xd6d6a3e8, 0x9b64c2b0, 0xa00ae278 };
+
/*
* This function adds bytes into the entropy "pool". It does not
* update the entropy estimate. The caller should call
@@ -464,29 +480,24 @@ static struct entropy_store nonblocking_pool = {
* it's cheap to do so and helps slightly in the expected case where
* the entropy is concentrated in the low-order bits.
*/
-static void mix_pool_bytes_extract(struct entropy_store *r, const void *in,
- int nbytes, __u8 out[64])
+static void __mix_pool_bytes(struct entropy_store *r, const void *in,
+ int nbytes, __u8 out[64])
{
- static __u32 const twist_table[8] = {
- 0x00000000, 0x3b6e20c8, 0x76dc4190, 0x4db26158,
- 0xedb88320, 0xd6d6a3e8, 0x9b64c2b0, 0xa00ae278 };
unsigned long i, j, tap1, tap2, tap3, tap4, tap5;
int input_rotate;
int wordmask = r->poolinfo->poolwords - 1;
const char *bytes = in;
__u32 w;
- unsigned long flags;
- /* Taps are constant, so we can load them without holding r->lock. */
tap1 = r->poolinfo->tap1;
tap2 = r->poolinfo->tap2;
tap3 = r->poolinfo->tap3;
tap4 = r->poolinfo->tap4;
tap5 = r->poolinfo->tap5;
- spin_lock_irqsave(&r->lock, flags);
- input_rotate = r->input_rotate;
- i = r->add_ptr;
+ smp_rmb();
+ input_rotate = ACCESS_ONCE(r->input_rotate);
+ i = ACCESS_ONCE(r->add_ptr);
/* mix one byte at a time to simplify size handling and churn faster */
while (nbytes--) {
@@ -513,19 +524,53 @@ static void mix_pool_bytes_extract(struct entropy_store *r, const void *in,
input_rotate += i ? 7 : 14;
}
- r->input_rotate = input_rotate;
- r->add_ptr = i;
+ ACCESS_ONCE(r->input_rotate) = input_rotate;
+ ACCESS_ONCE(r->add_ptr) = i;
+ smp_wmb();
if (out)
for (j = 0; j < 16; j++)
((__u32 *)out)[j] = r->pool[(i - j) & wordmask];
+}
+
+static void mix_pool_bytes(struct entropy_store *r, const void *in,
+ int nbytes, __u8 out[64])
+{
+ unsigned long flags;
+ spin_lock_irqsave(&r->lock, flags);
+ __mix_pool_bytes(r, in, nbytes, out);
spin_unlock_irqrestore(&r->lock, flags);
}
-static void mix_pool_bytes(struct entropy_store *r, const void *in, int bytes)
+struct fast_pool {
+ __u32 pool[4];
+ unsigned long last;
+ unsigned short count;
+ unsigned char rotate;
+ unsigned char last_timer_intr;
+};
+
+/*
+ * This is a fast mixing routine used by the interrupt randomness
+ * collector. It's hardcoded for an 128 bit pool and assumes that any
+ * locks that might be needed are taken by the caller.
+ */
+static void fast_mix(struct fast_pool *f, const void *in, int nbytes)
{
- mix_pool_bytes_extract(r, in, bytes, NULL);
+ const char *bytes = in;
+ __u32 w;
+ unsigned i = f->count;
+ unsigned input_rotate = f->rotate;
+
+ while (nbytes--) {
+ w = rol32(*bytes++, input_rotate & 31) ^ f->pool[i & 3] ^
+ f->pool[(i + 1) & 3];
+ f->pool[i & 3] = (w >> 3) ^ twist_table[w & 7];
+ input_rotate += (i++ & 3) ? 7 : 14;
+ }
+ f->count = i;
+ f->rotate = input_rotate;
}
/*
@@ -533,30 +578,34 @@ static void mix_pool_bytes(struct entropy_store *r, const void *in, int bytes)
*/
static void credit_entropy_bits(struct entropy_store *r, int nbits)
{
- unsigned long flags;
- int entropy_count;
+ int entropy_count, orig;
if (!nbits)
return;
- spin_lock_irqsave(&r->lock, flags);
-
DEBUG_ENT("added %d entropy credits to %s\n", nbits, r->name);
- entropy_count = r->entropy_count;
+retry:
+ entropy_count = orig = ACCESS_ONCE(r->entropy_count);
entropy_count += nbits;
if (entropy_count < 0) {
DEBUG_ENT("negative entropy/overflow\n");
entropy_count = 0;
} else if (entropy_count > r->poolinfo->POOLBITS)
entropy_count = r->poolinfo->POOLBITS;
- r->entropy_count = entropy_count;
+ if (cmpxchg(&r->entropy_count, orig, entropy_count) != orig)
+ goto retry;
+
+ if (!r->initialized && nbits > 0) {
+ r->entropy_total += nbits;
+ if (r->entropy_total > 128)
+ r->initialized = 1;
+ }
/* should we wake readers? */
if (r == &input_pool && entropy_count >= random_read_wakeup_thresh) {
wake_up_interruptible(&random_read_wait);
kill_fasync(&fasync, SIGIO, POLL_IN);
}
- spin_unlock_irqrestore(&r->lock, flags);
}
/*********************************************************************
@@ -609,6 +658,25 @@ static void set_timer_rand_state(unsigned int irq,
}
#endif
+/*
+ * Add device- or boot-specific data to the input and nonblocking
+ * pools to help initialize them to unique values.
+ *
+ * None of this adds any entropy, it is meant to avoid the
+ * problem of the nonblocking pool having similar initial state
+ * across largely identical devices.
+ */
+void add_device_randomness(const void *buf, unsigned int size)
+{
+ unsigned long time = get_cycles() ^ jiffies;
+
+ mix_pool_bytes(&input_pool, buf, size, NULL);
+ mix_pool_bytes(&input_pool, &time, sizeof(time), NULL);
+ mix_pool_bytes(&nonblocking_pool, buf, size, NULL);
+ mix_pool_bytes(&nonblocking_pool, &time, sizeof(time), NULL);
+}
+EXPORT_SYMBOL(add_device_randomness);
+
static struct timer_rand_state input_timer_state;
/*
@@ -624,8 +692,8 @@ static struct timer_rand_state input_timer_state;
static void add_timer_randomness(struct timer_rand_state *state, unsigned num)
{
struct {
- cycles_t cycles;
long jiffies;
+ unsigned cycles;
unsigned num;
} sample;
long delta, delta2, delta3;
@@ -639,7 +707,7 @@ static void add_timer_randomness(struct timer_rand_state *state, unsigned num)
sample.jiffies = jiffies;
sample.cycles = get_cycles();
sample.num = num;
- mix_pool_bytes(&input_pool, &sample, sizeof(sample));
+ mix_pool_bytes(&input_pool, &sample, sizeof(sample), NULL);
/*
* Calculate number of bits of randomness we probably added.
@@ -696,17 +764,48 @@ void add_input_randomness(unsigned int type, unsigned int code,
}
EXPORT_SYMBOL_GPL(add_input_randomness);
-void add_interrupt_randomness(int irq)
+static DEFINE_PER_CPU(struct fast_pool, irq_randomness);
+
+void add_interrupt_randomness(int irq, int irq_flags)
{
- struct timer_rand_state *state;
+ struct entropy_store *r;
+ struct fast_pool *fast_pool = &__get_cpu_var(irq_randomness);
+ struct pt_regs *regs = get_irq_regs();
+ unsigned long now = jiffies;
+ __u32 input[4], cycles = get_cycles();
+
+ input[0] = cycles ^ jiffies;
+ input[1] = irq;
+ if (regs) {
+ __u64 ip = instruction_pointer(regs);
+ input[2] = ip;
+ input[3] = ip >> 32;
+ }
- state = get_timer_rand_state(irq);
+ fast_mix(fast_pool, input, sizeof(input));
- if (state == NULL)
+ if ((fast_pool->count & 1023) &&
+ !time_after(now, fast_pool->last + HZ))
return;
- DEBUG_ENT("irq event %d\n", irq);
- add_timer_randomness(state, 0x100 + irq);
+ fast_pool->last = now;
+
+ r = nonblocking_pool.initialized ? &input_pool : &nonblocking_pool;
+ __mix_pool_bytes(r, &fast_pool->pool, sizeof(fast_pool->pool), NULL);
+ /*
+ * If we don't have a valid cycle counter, and we see
+ * back-to-back timer interrupts, then skip giving credit for
+ * any entropy.
+ */
+ if (cycles == 0) {
+ if (irq_flags & __IRQF_TIMER) {
+ if (fast_pool->last_timer_intr)
+ return;
+ fast_pool->last_timer_intr = 1;
+ } else
+ fast_pool->last_timer_intr = 0;
+ }
+ credit_entropy_bits(r, 1);
}
#ifdef CONFIG_BLOCK
@@ -738,7 +837,7 @@ static ssize_t extract_entropy(struct entropy_store *r, void *buf,
*/
static void xfer_secondary_pool(struct entropy_store *r, size_t nbytes)
{
- __u32 tmp[OUTPUT_POOL_WORDS];
+ __u32 tmp[OUTPUT_POOL_WORDS];
if (r->pull && r->entropy_count < nbytes * 8 &&
r->entropy_count < r->poolinfo->POOLBITS) {
@@ -757,7 +856,7 @@ static void xfer_secondary_pool(struct entropy_store *r, size_t nbytes)
bytes = extract_entropy(r->pull, tmp, bytes,
random_read_wakeup_thresh / 8, rsvd);
- mix_pool_bytes(r, tmp, bytes);
+ mix_pool_bytes(r, tmp, bytes, NULL);
credit_entropy_bits(r, bytes*8);
}
}
@@ -816,13 +915,19 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min,
static void extract_buf(struct entropy_store *r, __u8 *out)
{
int i;
- __u32 hash[5], workspace[SHA_WORKSPACE_WORDS];
+ union {
+ __u32 w[5];
+ unsigned long l[LONGS(EXTRACT_SIZE)];
+ } hash;
+ __u32 workspace[SHA_WORKSPACE_WORDS];
__u8 extract[64];
+ unsigned long flags;
/* Generate a hash across the pool, 16 words (512 bits) at a time */
- sha_init(hash);
+ sha_init(hash.w);
+ spin_lock_irqsave(&r->lock, flags);
for (i = 0; i < r->poolinfo->poolwords; i += 16)
- sha_transform(hash, (__u8 *)(r->pool + i), workspace);
+ sha_transform(hash.w, (__u8 *)(r->pool + i), workspace);
/*
* We mix the hash back into the pool to prevent backtracking
@@ -833,13 +938,14 @@ static void extract_buf(struct entropy_store *r, __u8 *out)
* brute-forcing the feedback as hard as brute-forcing the
* hash.
*/
- mix_pool_bytes_extract(r, hash, sizeof(hash), extract);
+ __mix_pool_bytes(r, hash.w, sizeof(hash.w), extract);
+ spin_unlock_irqrestore(&r->lock, flags);
/*
* To avoid duplicates, we atomically extract a portion of the
* pool while mixing, and hash one final time.
*/
- sha_transform(hash, extract, workspace);
+ sha_transform(hash.w, extract, workspace);
memset(extract, 0, sizeof(extract));
memset(workspace, 0, sizeof(workspace));
@@ -848,19 +954,30 @@ static void extract_buf(struct entropy_store *r, __u8 *out)
* pattern, we fold it in half. Thus, we always feed back
* twice as much data as we output.
*/
- hash[0] ^= hash[3];
- hash[1] ^= hash[4];
- hash[2] ^= rol32(hash[2], 16);
- memcpy(out, hash, EXTRACT_SIZE);
- memset(hash, 0, sizeof(hash));
+ hash.w[0] ^= hash.w[3];
+ hash.w[1] ^= hash.w[4];
+ hash.w[2] ^= rol32(hash.w[2], 16);
+
+ /*
+ * If we have a architectural hardware random number
+ * generator, mix that in, too.
+ */
+ for (i = 0; i < LONGS(EXTRACT_SIZE); i++) {
+ unsigned long v;
+ if (!arch_get_random_long(&v))
+ break;
+ hash.l[i] ^= v;
+ }
+
+ memcpy(out, &hash, EXTRACT_SIZE);
+ memset(&hash, 0, sizeof(hash));
}
static ssize_t extract_entropy(struct entropy_store *r, void *buf,
- size_t nbytes, int min, int reserved)
+ size_t nbytes, int min, int reserved)
{
ssize_t ret = 0, i;
__u8 tmp[EXTRACT_SIZE];
- unsigned long flags;
xfer_secondary_pool(r, nbytes);
nbytes = account(r, nbytes, min, reserved);
@@ -869,6 +986,8 @@ static ssize_t extract_entropy(struct entropy_store *r, void *buf,
extract_buf(r, tmp);
if (fips_enabled) {
+ unsigned long flags;
+
spin_lock_irqsave(&r->lock, flags);
if (!memcmp(tmp, r->last_data, EXTRACT_SIZE))
panic("Hardware RNG duplicated output!\n");
@@ -927,17 +1046,34 @@ static ssize_t extract_entropy_user(struct entropy_store *r, void __user *buf,
/*
* This function is the exported kernel interface. It returns some
- * number of good random numbers, suitable for seeding TCP sequence
- * numbers, etc.
+ * number of good random numbers, suitable for key generation, seeding
+ * TCP sequence numbers, etc. It does not use the hw random number
+ * generator, if available; use get_random_bytes_arch() for that.
*/
void get_random_bytes(void *buf, int nbytes)
{
+ extract_entropy(&nonblocking_pool, buf, nbytes, 0, 0);
+}
+EXPORT_SYMBOL(get_random_bytes);
+
+/*
+ * This function will use the architecture-specific hardware random
+ * number generator if it is available. The arch-specific hw RNG will
+ * almost certainly be faster than what we can do in software, but it
+ * is impossible to verify that it is implemented securely (as
+ * opposed, to, say, the AES encryption of a sequence number using a
+ * key known by the NSA). So it's useful if we need the speed, but
+ * only if we're willing to trust the hardware manufacturer not to
+ * have put in a back door.
+ */
+void get_random_bytes_arch(void *buf, int nbytes)
+{
char *p = buf;
while (nbytes) {
unsigned long v;
int chunk = min(nbytes, (int)sizeof(unsigned long));
-
+
if (!arch_get_random_long(&v))
break;
@@ -946,9 +1082,11 @@ void get_random_bytes(void *buf, int nbytes)
nbytes -= chunk;
}
- extract_entropy(&nonblocking_pool, p, nbytes, 0, 0);
+ if (nbytes)
+ extract_entropy(&nonblocking_pool, p, nbytes, 0, 0);
}
-EXPORT_SYMBOL(get_random_bytes);
+EXPORT_SYMBOL(get_random_bytes_arch);
+
/*
* init_std_data - initialize pool with system data
@@ -961,16 +1099,19 @@ EXPORT_SYMBOL(get_random_bytes);
*/
static void init_std_data(struct entropy_store *r)
{
- ktime_t now;
- unsigned long flags;
+ int i;
+ ktime_t now = ktime_get_real();
+ unsigned long rv;
- spin_lock_irqsave(&r->lock, flags);
r->entropy_count = 0;
- spin_unlock_irqrestore(&r->lock, flags);
-
- now = ktime_get_real();
- mix_pool_bytes(r, &now, sizeof(now));
- mix_pool_bytes(r, utsname(), sizeof(*(utsname())));
+ r->entropy_total = 0;
+ mix_pool_bytes(r, &now, sizeof(now), NULL);
+ for (i = r->poolinfo->POOLBYTES; i > 0; i -= sizeof(rv)) {
+ if (!arch_get_random_long(&rv))
+ break;
+ mix_pool_bytes(r, &rv, sizeof(rv), NULL);
+ }
+ mix_pool_bytes(r, utsname(), sizeof(*(utsname())), NULL);
}
static int rand_initialize(void)
@@ -1107,7 +1248,7 @@ write_pool(struct entropy_store *r, const char __user *buffer, size_t count)
count -= bytes;
p += bytes;
- mix_pool_bytes(r, buf, bytes);
+ mix_pool_bytes(r, buf, bytes, NULL);
cond_resched();
}
diff --git a/drivers/firmware/pcdp.c b/drivers/firmware/pcdp.c
index 51e0e2d..a330492 100644
--- a/drivers/firmware/pcdp.c
+++ b/drivers/firmware/pcdp.c
@@ -95,7 +95,7 @@ efi_setup_pcdp_console(char *cmdline)
if (efi.hcdp == EFI_INVALID_TABLE_ADDR)
return -ENODEV;
- pcdp = ioremap(efi.hcdp, 4096);
+ pcdp = early_ioremap(efi.hcdp, 4096);
printk(KERN_INFO "PCDP: v%d at 0x%lx\n", pcdp->rev, efi.hcdp);
if (strstr(cmdline, "console=hcdp")) {
@@ -131,6 +131,6 @@ efi_setup_pcdp_console(char *cmdline)
}
out:
- iounmap(pcdp);
+ early_iounmap(pcdp, 4096);
return rc;
}
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index d4c4937..fae2050 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -708,8 +708,8 @@ intel_dp_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
bpp = adjusted_mode->private_flags & INTEL_MODE_DP_FORCE_6BPC ? 18 : 24;
- for (lane_count = 1; lane_count <= max_lane_count; lane_count <<= 1) {
- for (clock = 0; clock <= max_clock; clock++) {
+ for (clock = 0; clock <= max_clock; clock++) {
+ for (lane_count = 1; lane_count <= max_lane_count; lane_count <<= 1) {
int link_avail = intel_dp_max_data_rate(intel_dp_link_clock(bws[clock]), lane_count);
if (intel_dp_link_required(mode->clock, bpp)
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index a6dcd18..96532bc 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -40,11 +40,28 @@
* Note that newer firmware allows querying device for maximum useable
* coordinates.
*/
+#define XMIN 0
+#define XMAX 6143
+#define YMIN 0
+#define YMAX 6143
#define XMIN_NOMINAL 1472
#define XMAX_NOMINAL 5472
#define YMIN_NOMINAL 1408
#define YMAX_NOMINAL 4448
+/* Size in bits of absolute position values reported by the hardware */
+#define ABS_POS_BITS 13
+
+/*
+ * Any position values from the hardware above the following limits are
+ * treated as "wrapped around negative" values that have been truncated to
+ * the 13-bit reporting range of the hardware. These are just reasonable
+ * guesses and can be adjusted if hardware is found that operates outside
+ * of these parameters.
+ */
+#define X_MAX_POSITIVE (((1 << ABS_POS_BITS) + XMAX) / 2)
+#define Y_MAX_POSITIVE (((1 << ABS_POS_BITS) + YMAX) / 2)
+
/*
* Synaptics touchpads report the y coordinate from bottom to top, which is
* opposite from what userspace expects.
@@ -544,6 +561,12 @@ static int synaptics_parse_hw_state(const unsigned char buf[],
hw->right = (buf[0] & 0x02) ? 1 : 0;
}
+ /* Convert wrap-around values to negative */
+ if (hw->x > X_MAX_POSITIVE)
+ hw->x -= 1 << ABS_POS_BITS;
+ if (hw->y > Y_MAX_POSITIVE)
+ hw->y -= 1 << ABS_POS_BITS;
+
return 0;
}
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 532a902..d432032 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -19,7 +19,7 @@
/*
* Tunable constants
*/
-#define ENDIO_HOOK_POOL_SIZE 10240
+#define ENDIO_HOOK_POOL_SIZE 1024
#define DEFERRED_SET_SIZE 64
#define MAPPING_POOL_SIZE 1024
#define PRISON_CELLS 1024
@@ -857,7 +857,7 @@ static void process_prepared_mapping(struct new_mapping *m)
if (m->err) {
cell_error(m->cell);
- return;
+ goto out;
}
/*
@@ -869,7 +869,7 @@ static void process_prepared_mapping(struct new_mapping *m)
if (r) {
DMERR("dm_thin_insert_block() failed");
cell_error(m->cell);
- return;
+ goto out;
}
/*
@@ -884,6 +884,7 @@ static void process_prepared_mapping(struct new_mapping *m)
} else
cell_defer(tc, m->cell, m->data_block);
+out:
list_del(&m->list);
mempool_free(m, tc->pool->mapping_pool);
}
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 2d97bf0..62306e5 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2321,7 +2321,10 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, int *skipp
/* There is nowhere to write, so all non-sync
* drives must be failed - so we are finished
*/
- sector_t rv = max_sector - sector_nr;
+ sector_t rv;
+ if (min_bad > 0)
+ max_sector = sector_nr + min_bad;
+ rv = max_sector - sector_nr;
*skipped = 1;
put_buf(r1_bio);
return rv;
diff --git a/drivers/media/rc/ene_ir.c b/drivers/media/rc/ene_ir.c
index ed77c6d..5327061 100644
--- a/drivers/media/rc/ene_ir.c
+++ b/drivers/media/rc/ene_ir.c
@@ -1018,6 +1018,8 @@ static int ene_probe(struct pnp_dev *pnp_dev, const struct pnp_device_id *id)
spin_lock_init(&dev->hw_lock);
+ dev->hw_io = pnp_port_start(pnp_dev, 0);
+
pnp_set_drvdata(pnp_dev, dev);
dev->pnp_dev = pnp_dev;
@@ -1072,7 +1074,6 @@ static int ene_probe(struct pnp_dev *pnp_dev, const struct pnp_device_id *id)
/* claim the resources */
error = -EBUSY;
- dev->hw_io = pnp_port_start(pnp_dev, 0);
if (!request_region(dev->hw_io, ENE_IO_SIZE, ENE_DRIVER_NAME)) {
dev->hw_io = -1;
dev->irq = -1;
diff --git a/drivers/mfd/ab3100-core.c b/drivers/mfd/ab3100-core.c
index 60107ee..4eec7b7 100644
--- a/drivers/mfd/ab3100-core.c
+++ b/drivers/mfd/ab3100-core.c
@@ -409,8 +409,6 @@ static irqreturn_t ab3100_irq_handler(int irq, void *data)
u32 fatevent;
int err;
- add_interrupt_randomness(irq);
-
err = ab3100_get_register_page_interruptible(ab3100, AB3100_EVENTA1,
event_regs, 3);
if (err)
diff --git a/drivers/mfd/wm831x-otp.c b/drivers/mfd/wm831x-otp.c
index f742745..b90f3e0 100644
--- a/drivers/mfd/wm831x-otp.c
+++ b/drivers/mfd/wm831x-otp.c
@@ -18,6 +18,7 @@
#include <linux/bcd.h>
#include <linux/delay.h>
#include <linux/mfd/core.h>
+#include <linux/random.h>
#include <linux/mfd/wm831x/core.h>
#include <linux/mfd/wm831x/otp.h>
@@ -66,6 +67,7 @@ static DEVICE_ATTR(unique_id, 0444, wm831x_unique_id_show, NULL);
int wm831x_otp_init(struct wm831x *wm831x)
{
+ char uuid[WM831X_UNIQUE_ID_LEN];
int ret;
ret = device_create_file(wm831x->dev, &dev_attr_unique_id);
@@ -73,6 +75,12 @@ int wm831x_otp_init(struct wm831x *wm831x)
dev_err(wm831x->dev, "Unique ID attribute not created: %d\n",
ret);
+ ret = wm831x_unique_id_read(wm831x, uuid);
+ if (ret == 0)
+ add_device_randomness(uuid, sizeof(uuid));
+ else
+ dev_err(wm831x->dev, "Failed to read UUID: %d\n", ret);
+
return ret;
}
diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index bdf960b..ae7528b 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -925,6 +925,7 @@ static struct usb_device_id rt2800usb_device_table[] = {
{ USB_DEVICE(0x0411, 0x015d) },
{ USB_DEVICE(0x0411, 0x016f) },
{ USB_DEVICE(0x0411, 0x01a2) },
+ { USB_DEVICE(0x0411, 0x01ee) },
/* Corega */
{ USB_DEVICE(0x07aa, 0x002f) },
{ USB_DEVICE(0x07aa, 0x003c) },
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index d1049ee..26fba2d 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -1431,14 +1431,9 @@ static int asus_wmi_platform_init(struct asus_wmi *asus)
*/
if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
asus->dsts_id = ASUS_WMI_METHODID_DSTS;
- else if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2, 0, 0, NULL))
+ else
asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
- if (!asus->dsts_id) {
- pr_err("Can't find DSTS");
- return -ENODEV;
- }
-
/* CWAP allow to define the behavior of the Fn+F2 key,
* this method doesn't seems to be present on Eee PCs */
if (asus->driver->wapf >= 0)
diff --git a/drivers/rtc/rtc-wm831x.c b/drivers/rtc/rtc-wm831x.c
index bdc909b..f3c2110 100644
--- a/drivers/rtc/rtc-wm831x.c
+++ b/drivers/rtc/rtc-wm831x.c
@@ -24,7 +24,7 @@
#include <linux/mfd/wm831x/core.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
-
+#include <linux/random.h>
/*
* R16416 (0x4020) - RTC Write Counter
@@ -96,6 +96,26 @@ struct wm831x_rtc {
unsigned int alarm_enabled:1;
};
+static void wm831x_rtc_add_randomness(struct wm831x *wm831x)
+{
+ int ret;
+ u16 reg;
+
+ /*
+ * The write counter contains a pseudo-random number which is
+ * regenerated every time we set the RTC so it should be a
+ * useful per-system source of entropy.
+ */
+ ret = wm831x_reg_read(wm831x, WM831X_RTC_WRITE_COUNTER);
+ if (ret >= 0) {
+ reg = ret;
+ add_device_randomness(®, sizeof(reg));
+ } else {
+ dev_warn(wm831x->dev, "Failed to read RTC write counter: %d\n",
+ ret);
+ }
+}
+
/*
* Read current time and date in RTC
*/
@@ -449,6 +469,8 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
alm_irq, ret);
}
+ wm831x_rtc_add_randomness(wm831x);
+
return 0;
err:
diff --git a/drivers/staging/media/lirc/lirc_sir.c b/drivers/staging/media/lirc/lirc_sir.c
index 6903d39..90e9e32 100644
--- a/drivers/staging/media/lirc/lirc_sir.c
+++ b/drivers/staging/media/lirc/lirc_sir.c
@@ -53,6 +53,7 @@
#include <linux/io.h>
#include <asm/irq.h>
#include <linux/fcntl.h>
+#include <linux/platform_device.h>
#ifdef LIRC_ON_SA1100
#include <asm/hardware.h>
#ifdef CONFIG_SA1100_COLLIE
@@ -488,9 +489,11 @@ static struct lirc_driver driver = {
.owner = THIS_MODULE,
};
+static struct platform_device *lirc_sir_dev;
static int init_chrdev(void)
{
+ driver.dev = &lirc_sir_dev->dev;
driver.minor = lirc_register_driver(&driver);
if (driver.minor < 0) {
printk(KERN_ERR LIRC_DRIVER_NAME ": init_chrdev() failed.\n");
@@ -1216,20 +1219,71 @@ static int init_lirc_sir(void)
return 0;
}
+static int __devinit lirc_sir_probe(struct platform_device *dev)
+{
+ return 0;
+}
+
+static int __devexit lirc_sir_remove(struct platform_device *dev)
+{
+ return 0;
+}
+
+static struct platform_driver lirc_sir_driver = {
+ .probe = lirc_sir_probe,
+ .remove = __devexit_p(lirc_sir_remove),
+ .driver = {
+ .name = "lirc_sir",
+ .owner = THIS_MODULE,
+ },
+};
static int __init lirc_sir_init(void)
{
int retval;
+ retval = platform_driver_register(&lirc_sir_driver);
+ if (retval) {
+ printk(KERN_ERR LIRC_DRIVER_NAME ": Platform driver register "
+ "failed!\n");
+ return -ENODEV;
+ }
+
+ lirc_sir_dev = platform_device_alloc("lirc_dev", 0);
+ if (!lirc_sir_dev) {
+ printk(KERN_ERR LIRC_DRIVER_NAME ": Platform device alloc "
+ "failed!\n");
+ retval = -ENOMEM;
+ goto pdev_alloc_fail;
+ }
+
+ retval = platform_device_add(lirc_sir_dev);
+ if (retval) {
+ printk(KERN_ERR LIRC_DRIVER_NAME ": Platform device add "
+ "failed!\n");
+ retval = -ENODEV;
+ goto pdev_add_fail;
+ }
+
retval = init_chrdev();
if (retval < 0)
- return retval;
+ goto fail;
+
retval = init_lirc_sir();
if (retval) {
drop_chrdev();
- return retval;
+ goto fail;
}
+
return 0;
+
+fail:
+ platform_device_del(lirc_sir_dev);
+pdev_add_fail:
+ platform_device_put(lirc_sir_dev);
+pdev_alloc_fail:
+ platform_driver_unregister(&lirc_sir_driver);
+ return retval;
}
static void __exit lirc_sir_exit(void)
@@ -1237,6 +1291,8 @@ static void __exit lirc_sir_exit(void)
drop_hardware();
drop_chrdev();
drop_port();
+ platform_device_unregister(lirc_sir_dev);
+ platform_driver_unregister(&lirc_sir_driver);
printk(KERN_INFO LIRC_DRIVER_NAME ": Uninstalled.\n");
}
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index a4b192d..08b92a6 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -660,7 +660,8 @@ static void pch_dma_rx_complete(void *arg)
tty_flip_buffer_push(tty);
tty_kref_put(tty);
async_tx_ack(priv->desc_rx);
- pch_uart_hal_enable_interrupt(priv, PCH_UART_HAL_RX_INT);
+ pch_uart_hal_enable_interrupt(priv, PCH_UART_HAL_RX_INT |
+ PCH_UART_HAL_RX_ERR_INT);
}
static void pch_dma_tx_complete(void *arg)
@@ -715,7 +716,8 @@ static int handle_rx_to(struct eg20t_port *priv)
int rx_size;
int ret;
if (!priv->start_rx) {
- pch_uart_hal_disable_interrupt(priv, PCH_UART_HAL_RX_INT);
+ pch_uart_hal_disable_interrupt(priv, PCH_UART_HAL_RX_INT |
+ PCH_UART_HAL_RX_ERR_INT);
return 0;
}
buf = &priv->rxbuf;
@@ -977,11 +979,13 @@ static irqreturn_t pch_uart_interrupt(int irq, void *dev_id)
case PCH_UART_IID_RDR: /* Received Data Ready */
if (priv->use_dma) {
pch_uart_hal_disable_interrupt(priv,
- PCH_UART_HAL_RX_INT);
+ PCH_UART_HAL_RX_INT |
+ PCH_UART_HAL_RX_ERR_INT);
ret = dma_handle_rx(priv);
if (!ret)
pch_uart_hal_enable_interrupt(priv,
- PCH_UART_HAL_RX_INT);
+ PCH_UART_HAL_RX_INT |
+ PCH_UART_HAL_RX_ERR_INT);
} else {
ret = handle_rx(priv);
}
@@ -1107,7 +1111,8 @@ static void pch_uart_stop_rx(struct uart_port *port)
struct eg20t_port *priv;
priv = container_of(port, struct eg20t_port, port);
priv->start_rx = 0;
- pch_uart_hal_disable_interrupt(priv, PCH_UART_HAL_RX_INT);
+ pch_uart_hal_disable_interrupt(priv, PCH_UART_HAL_RX_INT |
+ PCH_UART_HAL_RX_ERR_INT);
priv->int_dis_flag = 1;
}
@@ -1163,6 +1168,7 @@ static int pch_uart_startup(struct uart_port *port)
break;
case 16:
fifo_size = PCH_UART_HAL_FIFO16;
+ break;
case 1:
default:
fifo_size = PCH_UART_HAL_FIFO_DIS;
@@ -1200,7 +1206,8 @@ static int pch_uart_startup(struct uart_port *port)
pch_request_dma(port);
priv->start_rx = 1;
- pch_uart_hal_enable_interrupt(priv, PCH_UART_HAL_RX_INT);
+ pch_uart_hal_enable_interrupt(priv, PCH_UART_HAL_RX_INT |
+ PCH_UART_HAL_RX_ERR_INT);
uart_update_timeout(port, CS8, default_baud);
return 0;
@@ -1258,7 +1265,7 @@ static void pch_uart_set_termios(struct uart_port *port,
stb = PCH_UART_HAL_STB1;
if (termios->c_cflag & PARENB) {
- if (!(termios->c_cflag & PARODD))
+ if (termios->c_cflag & PARODD)
parity = PCH_UART_HAL_PARITY_ODD;
else
parity = PCH_UART_HAL_PARITY_EVEN;
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 175b6bb..52340cc 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -24,6 +24,7 @@
#include <linux/kthread.h>
#include <linux/mutex.h>
#include <linux/freezer.h>
+#include <linux/random.h>
#include <asm/uaccess.h>
#include <asm/byteorder.h>
@@ -1897,6 +1898,14 @@ int usb_new_device(struct usb_device *udev)
/* Tell the world! */
announce_device(udev);
+ if (udev->serial)
+ add_device_randomness(udev->serial, strlen(udev->serial));
+ if (udev->product)
+ add_device_randomness(udev->product, strlen(udev->product));
+ if (udev->manufacturer)
+ add_device_randomness(udev->manufacturer,
+ strlen(udev->manufacturer));
+
device_enable_async_suspend(&udev->dev);
/* Register the device. The device driver is responsible
* for configuring the device and invoking the add-device
diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c
index 1fc8f12..347bb05 100644
--- a/drivers/usb/early/ehci-dbgp.c
+++ b/drivers/usb/early/ehci-dbgp.c
@@ -450,7 +450,7 @@ static int dbgp_ehci_startup(void)
writel(FLAG_CF, &ehci_regs->configured_flag);
/* Wait until the controller is no longer halted */
- loop = 10;
+ loop = 1000;
do {
status = readl(&ehci_regs->status);
if (!(status & STS_HALT))
diff --git a/drivers/video/smscufx.c b/drivers/video/smscufx.c
index aaccffa..dd9533a 100644
--- a/drivers/video/smscufx.c
+++ b/drivers/video/smscufx.c
@@ -904,7 +904,7 @@ static ssize_t ufx_ops_write(struct fb_info *info, const char __user *buf,
result = fb_sys_write(info, buf, count, ppos);
if (result > 0) {
- int start = max((int)(offset / info->fix.line_length) - 1, 0);
+ int start = max((int)(offset / info->fix.line_length), 0);
int lines = min((u32)((result / info->fix.line_length) + 1),
(u32)info->var.yres);
diff --git a/fs/exofs/ore.c b/fs/exofs/ore.c
index 24a49d4..1585db1 100644
--- a/fs/exofs/ore.c
+++ b/fs/exofs/ore.c
@@ -837,11 +837,11 @@ static int _write_mirror(struct ore_io_state *ios, int cur_comp)
bio->bi_rw |= REQ_WRITE;
}
- osd_req_write(or, _ios_obj(ios, dev), per_dev->offset,
- bio, per_dev->length);
+ osd_req_write(or, _ios_obj(ios, cur_comp),
+ per_dev->offset, bio, per_dev->length);
ORE_DBGMSG("write(0x%llx) offset=0x%llx "
"length=0x%llx dev=%d\n",
- _LLU(_ios_obj(ios, dev)->id),
+ _LLU(_ios_obj(ios, cur_comp)->id),
_LLU(per_dev->offset),
_LLU(per_dev->length), dev);
} else if (ios->kern_buff) {
@@ -853,20 +853,20 @@ static int _write_mirror(struct ore_io_state *ios, int cur_comp)
(ios->si.unit_off + ios->length >
ios->layout->stripe_unit));
- ret = osd_req_write_kern(or, _ios_obj(ios, per_dev->dev),
+ ret = osd_req_write_kern(or, _ios_obj(ios, cur_comp),
per_dev->offset,
ios->kern_buff, ios->length);
if (unlikely(ret))
goto out;
ORE_DBGMSG2("write_kern(0x%llx) offset=0x%llx "
"length=0x%llx dev=%d\n",
- _LLU(_ios_obj(ios, dev)->id),
+ _LLU(_ios_obj(ios, cur_comp)->id),
_LLU(per_dev->offset),
_LLU(ios->length), per_dev->dev);
} else {
- osd_req_set_attributes(or, _ios_obj(ios, dev));
+ osd_req_set_attributes(or, _ios_obj(ios, cur_comp));
ORE_DBGMSG2("obj(0x%llx) set_attributes=%d dev=%d\n",
- _LLU(_ios_obj(ios, dev)->id),
+ _LLU(_ios_obj(ios, cur_comp)->id),
ios->out_attr_len, dev);
}
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index c43a452..961e562 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -452,8 +452,11 @@ static int nfs_release_page(struct page *page, gfp_t gfp)
dfprintk(PAGECACHE, "NFS: release_page(%p)\n", page);
- /* Only do I/O if gfp is a superset of GFP_KERNEL */
- if (mapping && (gfp & GFP_KERNEL) == GFP_KERNEL) {
+ /* Only do I/O if gfp is a superset of GFP_KERNEL, and we're not
+ * doing this memory reclaim for a fs-related allocation.
+ */
+ if (mapping && (gfp & GFP_KERNEL) == GFP_KERNEL &&
+ !(current->flags & PF_FSTRANS)) {
int how = FLUSH_SYNC;
/* Don't let kswapd deadlock waiting for OOM RPC calls */
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 9cfa60a..87a1746 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2236,7 +2236,7 @@ out_acl:
if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) {
if ((buflen -= 4) < 0)
goto out_resource;
- WRITE32(1);
+ WRITE32(0);
}
if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) {
if ((buflen -= 4) < 0)
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index ac258be..c598cfb 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -182,7 +182,7 @@ static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp,
if (copy_from_user(&cpmode, argp, sizeof(cpmode)))
goto out;
- down_read(&inode->i_sb->s_umount);
+ mutex_lock(&nilfs->ns_snapshot_mount_mutex);
nilfs_transaction_begin(inode->i_sb, &ti, 0);
ret = nilfs_cpfile_change_cpmode(
@@ -192,7 +192,7 @@ static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp,
else
nilfs_transaction_commit(inode->i_sb); /* never fails */
- up_read(&inode->i_sb->s_umount);
+ mutex_unlock(&nilfs->ns_snapshot_mount_mutex);
out:
mnt_drop_write(filp->f_path.mnt);
return ret;
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 8351c44..97bfbdd 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -951,6 +951,8 @@ static int nilfs_attach_snapshot(struct super_block *s, __u64 cno,
struct nilfs_root *root;
int ret;
+ mutex_lock(&nilfs->ns_snapshot_mount_mutex);
+
down_read(&nilfs->ns_segctor_sem);
ret = nilfs_cpfile_is_snapshot(nilfs->ns_cpfile, cno);
up_read(&nilfs->ns_segctor_sem);
@@ -975,6 +977,7 @@ static int nilfs_attach_snapshot(struct super_block *s, __u64 cno,
ret = nilfs_get_root_dentry(s, root, root_dentry);
nilfs_put_root(root);
out:
+ mutex_unlock(&nilfs->ns_snapshot_mount_mutex);
return ret;
}
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index 35a8970..1c98f53 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -76,6 +76,7 @@ struct the_nilfs *alloc_nilfs(struct block_device *bdev)
nilfs->ns_bdev = bdev;
atomic_set(&nilfs->ns_ndirtyblks, 0);
init_rwsem(&nilfs->ns_sem);
+ mutex_init(&nilfs->ns_snapshot_mount_mutex);
INIT_LIST_HEAD(&nilfs->ns_dirty_files);
INIT_LIST_HEAD(&nilfs->ns_gc_inodes);
spin_lock_init(&nilfs->ns_inode_lock);
diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h
index 9992b11..de7435f 100644
--- a/fs/nilfs2/the_nilfs.h
+++ b/fs/nilfs2/the_nilfs.h
@@ -47,6 +47,7 @@ enum {
* @ns_flags: flags
* @ns_bdev: block device
* @ns_sem: semaphore for shared states
+ * @ns_snapshot_mount_mutex: mutex to protect snapshot mounts
* @ns_sbh: buffer heads of on-disk super blocks
* @ns_sbp: pointers to super block data
* @ns_sbwtime: previous write time of super block
@@ -99,6 +100,7 @@ struct the_nilfs {
struct block_device *ns_bdev;
struct rw_semaphore ns_sem;
+ struct mutex ns_snapshot_mount_mutex;
/*
* used for
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index c5ed2f1..a2227f7 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -41,6 +41,9 @@ int follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *,
unsigned long *, int *, int, unsigned int flags);
void unmap_hugepage_range(struct vm_area_struct *,
unsigned long, unsigned long, struct page *);
+void __unmap_hugepage_range_final(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end,
+ struct page *ref_page);
void __unmap_hugepage_range(struct vm_area_struct *,
unsigned long, unsigned long, struct page *);
int hugetlb_prefault(struct address_space *, struct vm_area_struct *);
@@ -99,6 +102,13 @@ static inline unsigned long hugetlb_total_pages(void)
#define copy_hugetlb_page_range(src, dst, vma) ({ BUG(); 0; })
#define hugetlb_prefault(mapping, vma) ({ BUG(); 0; })
#define unmap_hugepage_range(vma, start, end, page) BUG()
+static inline void __unmap_hugepage_range_final(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end,
+ struct page *ref_page)
+{
+ BUG();
+}
+
static inline void hugetlb_report_meminfo(struct seq_file *m)
{
}
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index df53fdf..cdde2b3 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -124,8 +124,17 @@ extern struct group_info init_groups;
extern struct cred init_cred;
+extern struct task_group root_task_group;
+
+#ifdef CONFIG_CGROUP_SCHED
+# define INIT_CGROUP_SCHED(tsk) \
+ .sched_task_group = &root_task_group,
+#else
+# define INIT_CGROUP_SCHED(tsk)
+#endif
+
#ifdef CONFIG_PERF_EVENTS
-# define INIT_PERF_EVENTS(tsk) \
+# define INIT_PERF_EVENTS(tsk) \
.perf_event_mutex = \
__MUTEX_INITIALIZER(tsk.perf_event_mutex), \
.perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list),
@@ -162,6 +171,7 @@ extern struct cred init_cred;
}, \
.tasks = LIST_HEAD_INIT(tsk.tasks), \
INIT_PUSHABLE_TASKS(tsk) \
+ INIT_CGROUP_SCHED(tsk) \
.ptraced = LIST_HEAD_INIT(tsk.ptraced), \
.ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \
.real_parent = &tsk, \
diff --git a/include/linux/random.h b/include/linux/random.h
index 8f74538..29e217a 100644
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -50,11 +50,13 @@ struct rnd_state {
extern void rand_initialize_irq(int irq);
+extern void add_device_randomness(const void *, unsigned int);
extern void add_input_randomness(unsigned int type, unsigned int code,
unsigned int value);
-extern void add_interrupt_randomness(int irq);
+extern void add_interrupt_randomness(int irq, int irq_flags);
extern void get_random_bytes(void *buf, int nbytes);
+extern void get_random_bytes_arch(void *buf, int nbytes);
void generate_random_uuid(unsigned char uuid_out[16]);
#ifndef MODULE
diff --git a/include/linux/sched.h b/include/linux/sched.h
index d336c35..1e86bb4 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1236,6 +1236,9 @@ struct task_struct {
const struct sched_class *sched_class;
struct sched_entity se;
struct sched_rt_entity rt;
+#ifdef CONFIG_CGROUP_SCHED
+ struct task_group *sched_task_group;
+#endif
#ifdef CONFIG_PREEMPT_NOTIFIERS
/* list of struct preempt_notifier: */
@@ -2646,7 +2649,7 @@ extern int sched_group_set_rt_period(struct task_group *tg,
extern long sched_group_rt_period(struct task_group *tg);
extern int sched_rt_can_attach(struct task_group *tg, struct task_struct *tsk);
#endif
-#endif
+#endif /* CONFIG_CGROUP_SCHED */
extern int task_can_switch_user(struct user_struct *up,
struct task_struct *tsk);
diff --git a/kernel/futex.c b/kernel/futex.c
index 866c9d5..80fb1c6 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -2231,11 +2231,11 @@ int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb,
* @uaddr2: the pi futex we will take prior to returning to user-space
*
* The caller will wait on uaddr and will be requeued by futex_requeue() to
- * uaddr2 which must be PI aware. Normal wakeup will wake on uaddr2 and
- * complete the acquisition of the rt_mutex prior to returning to userspace.
- * This ensures the rt_mutex maintains an owner when it has waiters; without
- * one, the pi logic wouldn't know which task to boost/deboost, if there was a
- * need to.
+ * uaddr2 which must be PI aware and unique from uaddr. Normal wakeup will wake
+ * on uaddr2 and complete the acquisition of the rt_mutex prior to returning to
+ * userspace. This ensures the rt_mutex maintains an owner when it has waiters;
+ * without one, the pi logic would not know which task to boost/deboost, if
+ * there was a need to.
*
* We call schedule in futex_wait_queue_me() when we enqueue and return there
* via the following:
@@ -2272,6 +2272,9 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
struct futex_q q = futex_q_init;
int res, ret;
+ if (uaddr == uaddr2)
+ return -EINVAL;
+
if (!bitset)
return -EINVAL;
@@ -2343,7 +2346,7 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
* signal. futex_unlock_pi() will not destroy the lock_ptr nor
* the pi_state.
*/
- WARN_ON(!&q.pi_state);
+ WARN_ON(!q.pi_state);
pi_mutex = &q.pi_state->pi_mutex;
ret = rt_mutex_finish_proxy_lock(pi_mutex, to, &rt_waiter, 1);
debug_rt_mutex_free_waiter(&rt_waiter);
@@ -2370,7 +2373,7 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
* fault, unlock the rt_mutex and return the fault to userspace.
*/
if (ret == -EFAULT) {
- if (rt_mutex_owner(pi_mutex) == current)
+ if (pi_mutex && rt_mutex_owner(pi_mutex) == current)
rt_mutex_unlock(pi_mutex);
} else if (ret == -EINTR) {
/*
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 470d08c..10e0772 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -117,7 +117,7 @@ irqreturn_t
handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
{
irqreturn_t retval = IRQ_NONE;
- unsigned int random = 0, irq = desc->irq_data.irq;
+ unsigned int flags = 0, irq = desc->irq_data.irq;
do {
irqreturn_t res;
@@ -145,7 +145,7 @@ handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
/* Fall through to add to randomness */
case IRQ_HANDLED:
- random |= action->flags;
+ flags |= action->flags;
break;
default:
@@ -156,8 +156,7 @@ handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
action = action->next;
} while (action);
- if (random & IRQF_SAMPLE_RANDOM)
- add_interrupt_randomness(irq);
+ add_interrupt_randomness(irq, flags);
if (!noirqdebug)
note_interrupt(irq, desc, retval);
diff --git a/kernel/sched.c b/kernel/sched.c
index 9cd8ca7..e0431c4 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -746,22 +746,19 @@ static inline int cpu_of(struct rq *rq)
/*
* Return the group to which this tasks belongs.
*
- * We use task_subsys_state_check() and extend the RCU verification with
- * pi->lock and rq->lock because cpu_cgroup_attach() holds those locks for each
- * task it moves into the cgroup. Therefore by holding either of those locks,
- * we pin the task to the current cgroup.
+ * We cannot use task_subsys_state() and friends because the cgroup
+ * subsystem changes that value before the cgroup_subsys::attach() method
+ * is called, therefore we cannot pin it and might observe the wrong value.
+ *
+ * The same is true for autogroup's p->signal->autogroup->tg, the autogroup
+ * core changes this before calling sched_move_task().
+ *
+ * Instead we use a 'copy' which is updated from sched_move_task() while
+ * holding both task_struct::pi_lock and rq::lock.
*/
static inline struct task_group *task_group(struct task_struct *p)
{
- struct task_group *tg;
- struct cgroup_subsys_state *css;
-
- css = task_subsys_state_check(p, cpu_cgroup_subsys_id,
- lockdep_is_held(&p->pi_lock) ||
- lockdep_is_held(&task_rq(p)->lock));
- tg = container_of(css, struct task_group, css);
-
- return autogroup_task_group(p, tg);
+ return p->sched_task_group;
}
/* Change a task's cfs_rq and parent entity if it moves across CPUs/groups */
@@ -2372,7 +2369,7 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
* a task's CPU. ->pi_lock for waking tasks, rq->lock for runnable tasks.
*
* sched_move_task() holds both and thus holding either pins the cgroup,
- * see set_task_rq().
+ * see task_group().
*
* Furthermore, all task_rq users should acquire both locks, see
* task_rq_lock().
@@ -8952,6 +8949,7 @@ void sched_destroy_group(struct task_group *tg)
*/
void sched_move_task(struct task_struct *tsk)
{
+ struct task_group *tg;
int on_rq, running;
unsigned long flags;
struct rq *rq;
@@ -8966,6 +8964,12 @@ void sched_move_task(struct task_struct *tsk)
if (unlikely(running))
tsk->sched_class->put_prev_task(rq, tsk);
+ tg = container_of(task_subsys_state_check(tsk, cpu_cgroup_subsys_id,
+ lockdep_is_held(&tsk->sighand->siglock)),
+ struct task_group, css);
+ tg = autogroup_task_group(tsk, tg);
+ tsk->sched_task_group = tg;
+
#ifdef CONFIG_FAIR_GROUP_SCHED
if (tsk->sched_class->task_move_group)
tsk->sched_class->task_move_group(tsk, on_rq);
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 993599e..d74c317 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -886,7 +886,8 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
* %pK cannot be used in IRQ context because its test
* for CAP_SYSLOG would be meaningless.
*/
- if (in_irq() || in_serving_softirq() || in_nmi()) {
+ if (kptr_restrict && (in_irq() || in_serving_softirq() ||
+ in_nmi())) {
if (spec.field_width == -1)
spec.field_width = 2 * sizeof(void *);
return string(buf, end, "pK-error", spec);
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index b1e1bad..0f897b8 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2382,6 +2382,25 @@ void __unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
}
}
+void __unmap_hugepage_range_final(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end,
+ struct page *ref_page)
+{
+ __unmap_hugepage_range(vma, start, end, ref_page);
+
+ /*
+ * Clear this flag so that x86's huge_pmd_share page_table_shareable
+ * test will fail on a vma being torn down, and not grab a page table
+ * on its way out. We're lucky that the flag has such an appropriate
+ * name, and can in fact be safely cleared here. We could clear it
+ * before the __unmap_hugepage_range above, but all that's necessary
+ * is to clear it before releasing the i_mmap_mutex. This works
+ * because in the context this is called, the VMA is about to be
+ * destroyed and the i_mmap_mutex is held.
+ */
+ vma->vm_flags &= ~VM_MAYSHARE;
+}
+
void unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end, struct page *ref_page)
{
@@ -2939,9 +2958,14 @@ void hugetlb_change_protection(struct vm_area_struct *vma,
}
}
spin_unlock(&mm->page_table_lock);
- mutex_unlock(&vma->vm_file->f_mapping->i_mmap_mutex);
-
+ /*
+ * Must flush TLB before releasing i_mmap_mutex: x86's huge_pmd_unshare
+ * may have cleared our pud entry and done put_page on the page table:
+ * once we release i_mmap_mutex, another task can do the final put_page
+ * and that page table be reused and filled with junk.
+ */
flush_tlb_range(vma, start, end);
+ mutex_unlock(&vma->vm_file->f_mapping->i_mmap_mutex);
}
int hugetlb_reserve_pages(struct inode *inode,
diff --git a/mm/internal.h b/mm/internal.h
index 2189af4..0c26b5e 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -309,3 +309,5 @@ extern u64 hwpoison_filter_flags_mask;
extern u64 hwpoison_filter_flags_value;
extern u64 hwpoison_filter_memcg;
extern u32 hwpoison_filter_enable;
+
+extern void set_pageblock_order(void);
diff --git a/mm/memory.c b/mm/memory.c
index 1b1ca17..70f5daf 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1358,8 +1358,11 @@ unsigned long unmap_vmas(struct mmu_gather *tlb,
* Since no pte has actually been setup, it is
* safe to do nothing in this case.
*/
- if (vma->vm_file)
- unmap_hugepage_range(vma, start, end, NULL);
+ if (vma->vm_file) {
+ mutex_lock(&vma->vm_file->f_mapping->i_mmap_mutex);
+ __unmap_hugepage_range_final(vma, start, end, NULL);
+ mutex_unlock(&vma->vm_file->f_mapping->i_mmap_mutex);
+ }
start = end;
} else
diff --git a/mm/mmu_notifier.c b/mm/mmu_notifier.c
index 9a611d3..862b608 100644
--- a/mm/mmu_notifier.c
+++ b/mm/mmu_notifier.c
@@ -33,6 +33,24 @@
void __mmu_notifier_release(struct mm_struct *mm)
{
struct mmu_notifier *mn;
+ struct hlist_node *n;
+
+ /*
+ * RCU here will block mmu_notifier_unregister until
+ * ->release returns.
+ */
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(mn, n, &mm->mmu_notifier_mm->list, hlist)
+ /*
+ * if ->release runs before mmu_notifier_unregister it
+ * must be handled as it's the only way for the driver
+ * to flush all existing sptes and stop the driver
+ * from establishing any more sptes before all the
+ * pages in the mm are freed.
+ */
+ if (mn->ops->release)
+ mn->ops->release(mn, mm);
+ rcu_read_unlock();
spin_lock(&mm->mmu_notifier_mm->lock);
while (unlikely(!hlist_empty(&mm->mmu_notifier_mm->list))) {
@@ -46,23 +64,6 @@ void __mmu_notifier_release(struct mm_struct *mm)
* mmu_notifier_unregister to return.
*/
hlist_del_init_rcu(&mn->hlist);
- /*
- * RCU here will block mmu_notifier_unregister until
- * ->release returns.
- */
- rcu_read_lock();
- spin_unlock(&mm->mmu_notifier_mm->lock);
- /*
- * if ->release runs before mmu_notifier_unregister it
- * must be handled as it's the only way for the driver
- * to flush all existing sptes and stop the driver
- * from establishing any more sptes before all the
- * pages in the mm are freed.
- */
- if (mn->ops->release)
- mn->ops->release(mn, mm);
- rcu_read_unlock();
- spin_lock(&mm->mmu_notifier_mm->lock);
}
spin_unlock(&mm->mmu_notifier_mm->lock);
@@ -284,16 +285,13 @@ void mmu_notifier_unregister(struct mmu_notifier *mn, struct mm_struct *mm)
{
BUG_ON(atomic_read(&mm->mm_count) <= 0);
- spin_lock(&mm->mmu_notifier_mm->lock);
if (!hlist_unhashed(&mn->hlist)) {
- hlist_del_rcu(&mn->hlist);
-
/*
* RCU here will force exit_mmap to wait ->release to finish
* before freeing the pages.
*/
rcu_read_lock();
- spin_unlock(&mm->mmu_notifier_mm->lock);
+
/*
* exit_mmap will block in mmu_notifier_release to
* guarantee ->release is called before freeing the
@@ -302,8 +300,11 @@ void mmu_notifier_unregister(struct mmu_notifier *mn, struct mm_struct *mm)
if (mn->ops->release)
mn->ops->release(mn, mm);
rcu_read_unlock();
- } else
+
+ spin_lock(&mm->mmu_notifier_mm->lock);
+ hlist_del_rcu(&mn->hlist);
spin_unlock(&mm->mmu_notifier_mm->lock);
+ }
/*
* Wait any running method to finish, of course including
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 065dbe8..6e51bf0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4281,25 +4281,24 @@ static inline void setup_usemap(struct pglist_data *pgdat,
#ifdef CONFIG_HUGETLB_PAGE_SIZE_VARIABLE
-/* Return a sensible default order for the pageblock size. */
-static inline int pageblock_default_order(void)
-{
- if (HPAGE_SHIFT > PAGE_SHIFT)
- return HUGETLB_PAGE_ORDER;
-
- return MAX_ORDER-1;
-}
-
/* Initialise the number of pages represented by NR_PAGEBLOCK_BITS */
-static inline void __init set_pageblock_order(unsigned int order)
+void __init set_pageblock_order(void)
{
+ unsigned int order;
+
/* Check that pageblock_nr_pages has not already been setup */
if (pageblock_order)
return;
+ if (HPAGE_SHIFT > PAGE_SHIFT)
+ order = HUGETLB_PAGE_ORDER;
+ else
+ order = MAX_ORDER - 1;
+
/*
* Assume the largest contiguous order of interest is a huge page.
- * This value may be variable depending on boot parameters on IA64
+ * This value may be variable depending on boot parameters on IA64 and
+ * powerpc.
*/
pageblock_order = order;
}
@@ -4307,15 +4306,13 @@ static inline void __init set_pageblock_order(unsigned int order)
/*
* When CONFIG_HUGETLB_PAGE_SIZE_VARIABLE is not set, set_pageblock_order()
- * and pageblock_default_order() are unused as pageblock_order is set
- * at compile-time. See include/linux/pageblock-flags.h for the values of
- * pageblock_order based on the kernel config
+ * is unused as pageblock_order is set at compile-time. See
+ * include/linux/pageblock-flags.h for the values of pageblock_order based on
+ * the kernel config
*/
-static inline int pageblock_default_order(unsigned int order)
+void __init set_pageblock_order(void)
{
- return MAX_ORDER-1;
}
-#define set_pageblock_order(x) do {} while (0)
#endif /* CONFIG_HUGETLB_PAGE_SIZE_VARIABLE */
@@ -4403,7 +4400,7 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat,
if (!size)
continue;
- set_pageblock_order(pageblock_default_order());
+ set_pageblock_order();
setup_usemap(pgdat, zone, size);
ret = init_currently_empty_zone(zone, zone_start_pfn,
size, MEMMAP_EARLY);
diff --git a/mm/sparse.c b/mm/sparse.c
index a8bc7d3..bf7d3cc 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -486,6 +486,9 @@ void __init sparse_init(void)
struct page **map_map;
#endif
+ /* Setup pageblock_order for HUGETLB_PAGE_SIZE_VARIABLE */
+ set_pageblock_order();
+
/*
* map is using big page (aka 2M in x86 64 bit)
* usemap is less one page (aka 24 bytes)
diff --git a/net/core/dev.c b/net/core/dev.c
index 5738654..4b18703 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1177,6 +1177,7 @@ static int __dev_open(struct net_device *dev)
net_dmaengine_get();
dev_set_rx_mode(dev);
dev_activate(dev);
+ add_device_randomness(dev->dev_addr, dev->addr_len);
}
return ret;
@@ -4841,6 +4842,7 @@ int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa)
err = ops->ndo_set_mac_address(dev, sa);
if (!err)
call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+ add_device_randomness(dev->dev_addr, dev->addr_len);
return err;
}
EXPORT_SYMBOL(dev_set_mac_address);
@@ -5621,6 +5623,7 @@ int register_netdevice(struct net_device *dev)
dev_init_scheduler(dev);
dev_hold(dev);
list_netdevice(dev);
+ add_device_randomness(dev->dev_addr, dev->addr_len);
/* Notify protocols, that a new device appeared. */
ret = call_netdevice_notifiers(NETDEV_REGISTER, dev);
diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c
index 7f36b38..b856f87 100644
--- a/net/core/drop_monitor.c
+++ b/net/core/drop_monitor.c
@@ -33,22 +33,19 @@
#define TRACE_ON 1
#define TRACE_OFF 0
-static void send_dm_alert(struct work_struct *unused);
-
-
/*
* Globals, our netlink socket pointer
* and the work handle that will send up
* netlink alerts
*/
static int trace_state = TRACE_OFF;
-static DEFINE_SPINLOCK(trace_state_lock);
+static DEFINE_MUTEX(trace_state_mutex);
struct per_cpu_dm_data {
- struct work_struct dm_alert_work;
- struct sk_buff *skb;
- atomic_t dm_hit_count;
- struct timer_list send_timer;
+ spinlock_t lock;
+ struct sk_buff *skb;
+ struct work_struct dm_alert_work;
+ struct timer_list send_timer;
};
struct dm_hw_stat_delta {
@@ -74,56 +71,59 @@ static int dm_delay = 1;
static unsigned long dm_hw_check_delta = 2*HZ;
static LIST_HEAD(hw_stats_list);
-static void reset_per_cpu_data(struct per_cpu_dm_data *data)
+static struct sk_buff *reset_per_cpu_data(struct per_cpu_dm_data *data)
{
size_t al;
struct net_dm_alert_msg *msg;
struct nlattr *nla;
+ struct sk_buff *skb;
+ unsigned long flags;
al = sizeof(struct net_dm_alert_msg);
al += dm_hit_limit * sizeof(struct net_dm_drop_point);
al += sizeof(struct nlattr);
- data->skb = genlmsg_new(al, GFP_KERNEL);
- genlmsg_put(data->skb, 0, 0, &net_drop_monitor_family,
- 0, NET_DM_CMD_ALERT);
- nla = nla_reserve(data->skb, NLA_UNSPEC, sizeof(struct net_dm_alert_msg));
- msg = nla_data(nla);
- memset(msg, 0, al);
- atomic_set(&data->dm_hit_count, dm_hit_limit);
+ skb = genlmsg_new(al, GFP_KERNEL);
+
+ if (skb) {
+ genlmsg_put(skb, 0, 0, &net_drop_monitor_family,
+ 0, NET_DM_CMD_ALERT);
+ nla = nla_reserve(skb, NLA_UNSPEC,
+ sizeof(struct net_dm_alert_msg));
+ msg = nla_data(nla);
+ memset(msg, 0, al);
+ } else {
+ mod_timer(&data->send_timer, jiffies + HZ / 10);
+ }
+
+ spin_lock_irqsave(&data->lock, flags);
+ swap(data->skb, skb);
+ spin_unlock_irqrestore(&data->lock, flags);
+
+ return skb;
}
-static void send_dm_alert(struct work_struct *unused)
+static void send_dm_alert(struct work_struct *work)
{
struct sk_buff *skb;
- struct per_cpu_dm_data *data = &__get_cpu_var(dm_cpu_data);
+ struct per_cpu_dm_data *data;
- /*
- * Grab the skb we're about to send
- */
- skb = data->skb;
+ data = container_of(work, struct per_cpu_dm_data, dm_alert_work);
- /*
- * Replace it with a new one
- */
- reset_per_cpu_data(data);
-
- /*
- * Ship it!
- */
- genlmsg_multicast(skb, 0, NET_DM_GRP_ALERT, GFP_KERNEL);
+ skb = reset_per_cpu_data(data);
+ if (skb)
+ genlmsg_multicast(skb, 0, NET_DM_GRP_ALERT, GFP_KERNEL);
}
/*
* This is the timer function to delay the sending of an alert
* in the event that more drops will arrive during the
- * hysteresis period. Note that it operates under the timer interrupt
- * so we don't need to disable preemption here
+ * hysteresis period.
*/
-static void sched_send_work(unsigned long unused)
+static void sched_send_work(unsigned long _data)
{
- struct per_cpu_dm_data *data = &__get_cpu_var(dm_cpu_data);
+ struct per_cpu_dm_data *data = (struct per_cpu_dm_data *)_data;
schedule_work(&data->dm_alert_work);
}
@@ -134,17 +134,19 @@ static void trace_drop_common(struct sk_buff *skb, void *location)
struct nlmsghdr *nlh;
struct nlattr *nla;
int i;
- struct per_cpu_dm_data *data = &__get_cpu_var(dm_cpu_data);
+ struct sk_buff *dskb;
+ struct per_cpu_dm_data *data;
+ unsigned long flags;
+ local_irq_save(flags);
+ data = &__get_cpu_var(dm_cpu_data);
+ spin_lock(&data->lock);
+ dskb = data->skb;
- if (!atomic_add_unless(&data->dm_hit_count, -1, 0)) {
- /*
- * we're already at zero, discard this hit
- */
+ if (!dskb)
goto out;
- }
- nlh = (struct nlmsghdr *)data->skb->data;
+ nlh = (struct nlmsghdr *)dskb->data;
nla = genlmsg_data(nlmsg_data(nlh));
msg = nla_data(nla);
for (i = 0; i < msg->entries; i++) {
@@ -153,11 +155,12 @@ static void trace_drop_common(struct sk_buff *skb, void *location)
goto out;
}
}
-
+ if (msg->entries == dm_hit_limit)
+ goto out;
/*
* We need to create a new entry
*/
- __nla_reserve_nohdr(data->skb, sizeof(struct net_dm_drop_point));
+ __nla_reserve_nohdr(dskb, sizeof(struct net_dm_drop_point));
nla->nla_len += NLA_ALIGN(sizeof(struct net_dm_drop_point));
memcpy(msg->points[msg->entries].pc, &location, sizeof(void *));
msg->points[msg->entries].count = 1;
@@ -165,11 +168,11 @@ static void trace_drop_common(struct sk_buff *skb, void *location)
if (!timer_pending(&data->send_timer)) {
data->send_timer.expires = jiffies + dm_delay * HZ;
- add_timer_on(&data->send_timer, smp_processor_id());
+ add_timer(&data->send_timer);
}
out:
- return;
+ spin_unlock_irqrestore(&data->lock, flags);
}
static void trace_kfree_skb_hit(void *ignore, struct sk_buff *skb, void *location)
@@ -213,7 +216,7 @@ static int set_all_monitor_traces(int state)
struct dm_hw_stat_delta *new_stat = NULL;
struct dm_hw_stat_delta *temp;
- spin_lock(&trace_state_lock);
+ mutex_lock(&trace_state_mutex);
if (state == trace_state) {
rc = -EAGAIN;
@@ -252,7 +255,7 @@ static int set_all_monitor_traces(int state)
rc = -EINPROGRESS;
out_unlock:
- spin_unlock(&trace_state_lock);
+ mutex_unlock(&trace_state_mutex);
return rc;
}
@@ -295,12 +298,12 @@ static int dropmon_net_event(struct notifier_block *ev_block,
new_stat->dev = dev;
new_stat->last_rx = jiffies;
- spin_lock(&trace_state_lock);
+ mutex_lock(&trace_state_mutex);
list_add_rcu(&new_stat->list, &hw_stats_list);
- spin_unlock(&trace_state_lock);
+ mutex_unlock(&trace_state_mutex);
break;
case NETDEV_UNREGISTER:
- spin_lock(&trace_state_lock);
+ mutex_lock(&trace_state_mutex);
list_for_each_entry_safe(new_stat, tmp, &hw_stats_list, list) {
if (new_stat->dev == dev) {
new_stat->dev = NULL;
@@ -311,7 +314,7 @@ static int dropmon_net_event(struct notifier_block *ev_block,
}
}
}
- spin_unlock(&trace_state_lock);
+ mutex_unlock(&trace_state_mutex);
break;
}
out:
@@ -367,13 +370,15 @@ static int __init init_net_drop_monitor(void)
for_each_present_cpu(cpu) {
data = &per_cpu(dm_cpu_data, cpu);
- reset_per_cpu_data(data);
INIT_WORK(&data->dm_alert_work, send_dm_alert);
init_timer(&data->send_timer);
- data->send_timer.data = cpu;
+ data->send_timer.data = (unsigned long)data;
data->send_timer.function = sched_send_work;
+ spin_lock_init(&data->lock);
+ reset_per_cpu_data(data);
}
+
goto out;
out_unreg:
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 2ef859a..05842ab 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1354,6 +1354,7 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
goto errout;
send_addr_notify = 1;
modified = 1;
+ add_device_randomness(dev->dev_addr, dev->addr_len);
}
if (tb[IFLA_MTU]) {
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index 8761bf8..337c68b 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -246,7 +246,7 @@ static int rpcb_create_local_unix(void)
if (IS_ERR(clnt)) {
dprintk("RPC: failed to create AF_LOCAL rpcbind "
"client (errno %ld).\n", PTR_ERR(clnt));
- result = -PTR_ERR(clnt);
+ result = PTR_ERR(clnt);
goto out;
}
@@ -293,7 +293,7 @@ static int rpcb_create_local_net(void)
if (IS_ERR(clnt)) {
dprintk("RPC: failed to create local rpcbind "
"client (errno %ld).\n", PTR_ERR(clnt));
- result = -PTR_ERR(clnt);
+ result = PTR_ERR(clnt);
goto out;
}
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 4e2b3b4..c90b832 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -755,7 +755,9 @@ void rpc_execute(struct rpc_task *task)
static void rpc_async_schedule(struct work_struct *work)
{
+ current->flags |= PF_FSTRANS;
__rpc_execute(container_of(work, struct rpc_task, u.tk_work));
+ current->flags &= ~PF_FSTRANS;
}
/**
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c
index b446e10..06cdbff 100644
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -200,6 +200,7 @@ xprt_rdma_connect_worker(struct work_struct *work)
int rc = 0;
if (!xprt->shutdown) {
+ current->flags |= PF_FSTRANS;
xprt_clear_connected(xprt);
dprintk("RPC: %s: %sconnect\n", __func__,
@@ -212,10 +213,10 @@ xprt_rdma_connect_worker(struct work_struct *work)
out:
xprt_wake_pending_tasks(xprt, rc);
-
out_clear:
dprintk("RPC: %s: exit\n", __func__);
xprt_clear_connecting(xprt);
+ current->flags &= ~PF_FSTRANS;
}
/*
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 55472c4..1a6edc7 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1895,6 +1895,8 @@ static void xs_local_setup_socket(struct work_struct *work)
if (xprt->shutdown)
goto out;
+ current->flags |= PF_FSTRANS;
+
clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
status = __sock_create(xprt->xprt_net, AF_LOCAL,
SOCK_STREAM, 0, &sock, 1);
@@ -1928,6 +1930,7 @@ static void xs_local_setup_socket(struct work_struct *work)
out:
xprt_clear_connecting(xprt);
xprt_wake_pending_tasks(xprt, status);
+ current->flags &= ~PF_FSTRANS;
}
static void xs_udp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock)
@@ -1970,6 +1973,8 @@ static void xs_udp_setup_socket(struct work_struct *work)
if (xprt->shutdown)
goto out;
+ current->flags |= PF_FSTRANS;
+
/* Start by resetting any existing state */
xs_reset_transport(transport);
sock = xs_create_sock(xprt, transport,
@@ -1988,6 +1993,7 @@ static void xs_udp_setup_socket(struct work_struct *work)
out:
xprt_clear_connecting(xprt);
xprt_wake_pending_tasks(xprt, status);
+ current->flags &= ~PF_FSTRANS;
}
/*
@@ -2113,6 +2119,8 @@ static void xs_tcp_setup_socket(struct work_struct *work)
if (xprt->shutdown)
goto out;
+ current->flags |= PF_FSTRANS;
+
if (!sock) {
clear_bit(XPRT_CONNECTION_ABORT, &xprt->state);
sock = xs_create_sock(xprt, transport,
@@ -2162,6 +2170,7 @@ static void xs_tcp_setup_socket(struct work_struct *work)
case -EINPROGRESS:
case -EALREADY:
xprt_clear_connecting(xprt);
+ current->flags &= ~PF_FSTRANS;
return;
case -EINVAL:
/* Happens, for instance, if the user specified a link
@@ -2174,6 +2183,7 @@ out_eagain:
out:
xprt_clear_connecting(xprt);
xprt_wake_pending_tasks(xprt, status);
+ current->flags &= ~PF_FSTRANS;
}
/**
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 74d5292..b5e4c1c 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -981,6 +981,9 @@ int cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
}
mutex_unlock(&rdev->devlist_mtx);
+ if (total == 1)
+ return 0;
+
for (i = 0; i < rdev->wiphy.n_iface_combinations; i++) {
const struct ieee80211_iface_combination *c;
struct ieee80211_iface_limit *limits;
diff --git a/sound/drivers/mpu401/mpu401_uart.c b/sound/drivers/mpu401/mpu401_uart.c
index 1cff331..4608c2c 100644
--- a/sound/drivers/mpu401/mpu401_uart.c
+++ b/sound/drivers/mpu401/mpu401_uart.c
@@ -554,6 +554,7 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
spin_lock_init(&mpu->output_lock);
spin_lock_init(&mpu->timer_lock);
mpu->hardware = hardware;
+ mpu->irq = -1;
if (! (info_flags & MPU401_INFO_INTEGRATED)) {
int res_size = hardware == MPU401_HW_PC98II ? 4 : 2;
mpu->res = request_region(port, res_size, "MPU401 UART");
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 191fd78..2e2eb93 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4809,6 +4809,15 @@ static int alc269_resume(struct hda_codec *codec)
}
#endif /* CONFIG_PM */
+static void alc269_fixup_pincfg_no_hp_to_lineout(struct hda_codec *codec,
+ const struct alc_fixup *fix, int action)
+{
+ struct alc_spec *spec = codec->spec;
+
+ if (action == ALC_FIXUP_ACT_PRE_PROBE)
+ spec->parse_flags = HDA_PINCFG_NO_HP_FIXUP;
+}
+
static void alc269_fixup_hweq(struct hda_codec *codec,
const struct alc_fixup *fix, int action)
{
@@ -4909,6 +4918,8 @@ enum {
ALC269_FIXUP_DMIC,
ALC269VB_FIXUP_AMIC,
ALC269VB_FIXUP_DMIC,
+ ALC269_FIXUP_LENOVO_DOCK,
+ ALC269_FIXUP_PINCFG_NO_HP_TO_LINEOUT,
};
static const struct alc_fixup alc269_fixups[] = {
@@ -5029,6 +5040,20 @@ static const struct alc_fixup alc269_fixups[] = {
{ }
},
},
+ [ALC269_FIXUP_LENOVO_DOCK] = {
+ .type = ALC_FIXUP_PINS,
+ .v.pins = (const struct alc_pincfg[]) {
+ { 0x19, 0x23a11040 }, /* dock mic */
+ { 0x1b, 0x2121103f }, /* dock headphone */
+ { }
+ },
+ .chained = true,
+ .chain_id = ALC269_FIXUP_PINCFG_NO_HP_TO_LINEOUT
+ },
+ [ALC269_FIXUP_PINCFG_NO_HP_TO_LINEOUT] = {
+ .type = ALC_FIXUP_FUNC,
+ .v.func = alc269_fixup_pincfg_no_hp_to_lineout,
+ },
};
static const struct snd_pci_quirk alc269_fixup_tbl[] = {
@@ -5051,6 +5076,8 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x17aa, 0x21b8, "Thinkpad Edge 14", ALC269_FIXUP_SKU_IGNORE),
SND_PCI_QUIRK(0x17aa, 0x21ca, "Thinkpad L412", ALC269_FIXUP_SKU_IGNORE),
SND_PCI_QUIRK(0x17aa, 0x21e9, "Thinkpad Edge 15", ALC269_FIXUP_SKU_IGNORE),
+ SND_PCI_QUIRK(0x17aa, 0x21f6, "Thinkpad T530", ALC269_FIXUP_LENOVO_DOCK),
+ SND_PCI_QUIRK(0x17aa, 0x2203, "Thinkpad X230 Tablet", ALC269_FIXUP_LENOVO_DOCK),
SND_PCI_QUIRK(0x17aa, 0x3bf8, "Quanta FL1", ALC269_FIXUP_QUANTA_MUTE),
SND_PCI_QUIRK(0x17aa, 0x3bf8, "Lenovo Ideapd", ALC269_FIXUP_PCM_44K),
SND_PCI_QUIRK(0x17aa, 0x9e54, "LENOVO NB", ALC269_FIXUP_LENOVO_EAPD),
@@ -5109,6 +5136,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
static const struct alc_model_fixup alc269_fixup_models[] = {
{.id = ALC269_FIXUP_AMIC, .name = "laptop-amic"},
{.id = ALC269_FIXUP_DMIC, .name = "laptop-dmic"},
+ {.id = ALC269_FIXUP_LENOVO_DOCK, .name = "lenovo-dock"},
{}
};
diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c
index 1fe1308..7160ff2 100644
--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -3227,7 +3227,7 @@ static void set_widgets_power_state_vt1718S(struct hda_codec *codec)
{
struct via_spec *spec = codec->spec;
int imux_is_smixer;
- unsigned int parm;
+ unsigned int parm, parm2;
/* MUX6 (1eh) = stereo mixer */
imux_is_smixer =
snd_hda_codec_read(codec, 0x1e, 0, AC_VERB_GET_CONNECT_SEL, 0x00) == 5;
@@ -3250,7 +3250,7 @@ static void set_widgets_power_state_vt1718S(struct hda_codec *codec)
parm = AC_PWRST_D3;
set_pin_power_state(codec, 0x27, &parm);
snd_hda_codec_write(codec, 0x1a, 0, AC_VERB_SET_POWER_STATE, parm);
- snd_hda_codec_write(codec, 0xb, 0, AC_VERB_SET_POWER_STATE, parm);
+ parm2 = parm; /* for pin 0x0b */
/* PW2 (26h), AOW2 (ah) */
parm = AC_PWRST_D3;
@@ -3265,6 +3265,9 @@ static void set_widgets_power_state_vt1718S(struct hda_codec *codec)
if (!spec->hp_independent_mode) /* check for redirected HP */
set_pin_power_state(codec, 0x28, &parm);
snd_hda_codec_write(codec, 0x8, 0, AC_VERB_SET_POWER_STATE, parm);
+ if (!spec->hp_independent_mode && parm2 != AC_PWRST_D3)
+ parm = parm2;
+ snd_hda_codec_write(codec, 0xb, 0, AC_VERB_SET_POWER_STATE, parm);
/* MW9 (21h), Mw2 (1ah), AOW0 (8h) */
snd_hda_codec_write(codec, 0x21, 0, AC_VERB_SET_POWER_STATE,
imux_is_smixer ? AC_PWRST_D0 : parm);
diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index 07dd7eb..e97df24 100644
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -3105,6 +3105,9 @@ static int wm8962_set_bias_level(struct snd_soc_codec *codec,
/* VMID 2*250k */
snd_soc_update_bits(codec, WM8962_PWR_MGMT_1,
WM8962_VMID_SEL_MASK, 0x100);
+
+ if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
+ msleep(100);
break;
case SND_SOC_BIAS_OFF:
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index de61b8a..98c5774 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -2508,7 +2508,7 @@ static int wm8994_hw_params(struct snd_pcm_substream *substream,
return -EINVAL;
}
- bclk_rate = params_rate(params) * 2;
+ bclk_rate = params_rate(params) * 4;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
bclk_rate *= 16;
diff --git a/sound/usb/clock.c b/sound/usb/clock.c
index 379baad..5e634a2 100644
--- a/sound/usb/clock.c
+++ b/sound/usb/clock.c
@@ -111,7 +111,8 @@ static bool uac_clock_source_is_valid(struct snd_usb_audio *chip, int source_id)
return 0;
/* If a clock source can't tell us whether it's valid, we assume it is */
- if (!uac2_control_is_readable(cs_desc->bmControls, UAC2_CS_CONTROL_CLOCK_VALID))
+ if (!uac2_control_is_readable(cs_desc->bmControls,
+ UAC2_CS_CONTROL_CLOCK_VALID - 1))
return 1;
err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,
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