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Message-Id: <1180626029.26422.35.camel@localhost>
Date: Thu, 31 May 2007 17:40:29 +0200
From: Martin Schwidefsky <schwidefsky@...ibm.com>
To: torvalds@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org
Subject: Please pull git390 'for-linus' branch
Please pull from 'for-linus' branch of
git://git390.osdl.marist.edu/pub/scm/linux-2.6.git for-linus
to receive the following updates:
arch/s390/hypfs/hypfs_diag.c | 17 +++++++++++--
arch/s390/kernel/debug.c | 22 +++++++++---------
arch/s390/kernel/setup.c | 4 +-
arch/s390/kernel/smp.c | 6 ++--
drivers/s390/block/dasd_eer.c | 16 ++++++------
drivers/s390/char/raw3270.c | 10 ++++----
drivers/s390/cio/device.c | 49 +++++++++++++++++++++++++++++++---------
drivers/s390/cio/device_fsm.c | 6 +++++
8 files changed, 87 insertions(+), 43 deletions(-)
Christoph Hellwig (3):
[S390] dasd_eer: use mutex instead of semaphore
[S390] arch/s390/kernel/debug.c: use mutex instead of semaphore
[S390] raw3270: use mutex instead of semaphore
Cornelia Huck (1):
[S390] cio: Use device_schedule_callback() for removing disconnected devices.
Heiko Carstens (1):
[S390] Fix section annotations.
Michael Holzheu (1):
[S390] Add exception handler for diagnose 224
Peter Oberparleiter (1):
[S390] cio: deregister ccw device when pgid disband failed
diff --git a/arch/s390/hypfs/hypfs_diag.c b/arch/s390/hypfs/hypfs_diag.c
index 2782cf9..b9a1ce1 100644
--- a/arch/s390/hypfs/hypfs_diag.c
+++ b/arch/s390/hypfs/hypfs_diag.c
@@ -481,9 +481,17 @@ out:
/* Diagnose 224 functions */
-static void diag224(void *ptr)
+static int diag224(void *ptr)
{
- asm volatile("diag %0,%1,0x224" : :"d" (0), "d"(ptr) : "memory");
+ int rc = -ENOTSUPP;
+
+ asm volatile(
+ " diag %1,%2,0x224\n"
+ "0: lhi %0,0x0\n"
+ "1:\n"
+ EX_TABLE(0b,1b)
+ : "+d" (rc) :"d" (0), "d" (ptr) : "memory");
+ return rc;
}
static int diag224_get_name_table(void)
@@ -492,7 +500,10 @@ static int diag224_get_name_table(void)
diag224_cpu_names = kmalloc(PAGE_SIZE, GFP_KERNEL | GFP_DMA);
if (!diag224_cpu_names)
return -ENOMEM;
- diag224(diag224_cpu_names);
+ if (diag224(diag224_cpu_names)) {
+ kfree(diag224_cpu_names);
+ return -ENOTSUPP;
+ }
EBCASC(diag224_cpu_names + 16, (*diag224_cpu_names + 1) * 16);
return 0;
}
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index dca6eaf..1b2f5ce 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -163,7 +163,7 @@ unsigned int debug_feature_version = __DEBUG_FEATURE_VERSION;
static debug_info_t *debug_area_first = NULL;
static debug_info_t *debug_area_last = NULL;
-static DECLARE_MUTEX(debug_lock);
+static DEFINE_MUTEX(debug_mutex);
static int initialized;
@@ -576,7 +576,7 @@ debug_input(struct file *file, const char __user *user_buf, size_t length,
int rc = 0;
file_private_info_t *p_info;
- down(&debug_lock);
+ mutex_lock(&debug_mutex);
p_info = ((file_private_info_t *) file->private_data);
if (p_info->view->input_proc)
rc = p_info->view->input_proc(p_info->debug_info_org,
@@ -584,7 +584,7 @@ debug_input(struct file *file, const char __user *user_buf, size_t length,
length, offset);
else
rc = -EPERM;
- up(&debug_lock);
+ mutex_unlock(&debug_mutex);
return rc; /* number of input characters */
}
@@ -602,7 +602,7 @@ debug_open(struct inode *inode, struct file *file)
file_private_info_t *p_info;
debug_info_t *debug_info, *debug_info_snapshot;
- down(&debug_lock);
+ mutex_lock(&debug_mutex);
debug_info = file->f_path.dentry->d_inode->i_private;
/* find debug view */
for (i = 0; i < DEBUG_MAX_VIEWS; i++) {
@@ -653,7 +653,7 @@ found:
file->private_data = p_info;
debug_info_get(debug_info);
out:
- up(&debug_lock);
+ mutex_unlock(&debug_mutex);
return rc;
}
@@ -688,7 +688,7 @@ debug_register (char *name, int pages_per_area, int nr_areas, int buf_size)
if (!initialized)
BUG();
- down(&debug_lock);
+ mutex_lock(&debug_mutex);
/* create new debug_info */
@@ -702,7 +702,7 @@ out:
if (!rc){
printk(KERN_ERR "debug: debug_register failed for %s\n",name);
}
- up(&debug_lock);
+ mutex_unlock(&debug_mutex);
return rc;
}
@@ -716,9 +716,9 @@ debug_unregister(debug_info_t * id)
{
if (!id)
goto out;
- down(&debug_lock);
+ mutex_lock(&debug_mutex);
debug_info_put(id);
- up(&debug_lock);
+ mutex_unlock(&debug_mutex);
out:
return;
@@ -1054,11 +1054,11 @@ __init debug_init(void)
int rc = 0;
s390dbf_sysctl_header = register_sysctl_table(s390dbf_dir_table);
- down(&debug_lock);
+ mutex_lock(&debug_mutex);
debug_debugfs_root_entry = debugfs_create_dir(DEBUG_DIR_ROOT,NULL);
printk(KERN_INFO "debug: Initialization complete\n");
initialized = 1;
- up(&debug_lock);
+ mutex_unlock(&debug_mutex);
return rc;
}
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 6bfb088..51d6309 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -102,7 +102,7 @@ static struct resource data_resource = {
/*
* cpu_init() initializes state that is per-CPU.
*/
-void __devinit cpu_init (void)
+void __cpuinit cpu_init(void)
{
int addr = hard_smp_processor_id();
@@ -915,7 +915,7 @@ setup_arch(char **cmdline_p)
setup_zfcpdump(console_devno);
}
-void print_cpu_info(struct cpuinfo_S390 *cpuinfo)
+void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo)
{
printk("cpu %d "
#ifdef CONFIG_SMP
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 09f028a..8ff2fea 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -492,7 +492,7 @@ static unsigned int __init smp_count_cpus(void)
/*
* Activate a secondary processor.
*/
-int __devinit start_secondary(void *cpuvoid)
+int __cpuinit start_secondary(void *cpuvoid)
{
/* Setup the cpu */
cpu_init();
@@ -741,7 +741,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
smp_create_idle(cpu);
}
-void __devinit smp_prepare_boot_cpu(void)
+void __init smp_prepare_boot_cpu(void)
{
BUG_ON(smp_processor_id() != 0);
@@ -750,7 +750,7 @@ void __devinit smp_prepare_boot_cpu(void)
current_set[0] = current;
}
-void smp_cpus_done(unsigned int max_cpus)
+void __init smp_cpus_done(unsigned int max_cpus)
{
cpu_present_map = cpu_possible_map;
}
diff --git a/drivers/s390/block/dasd_eer.c b/drivers/s390/block/dasd_eer.c
index a1dc8c4..0c081a6 100644
--- a/drivers/s390/block/dasd_eer.c
+++ b/drivers/s390/block/dasd_eer.c
@@ -14,9 +14,9 @@
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/poll.h>
+#include <linux/mutex.h>
#include <asm/uaccess.h>
-#include <asm/semaphore.h>
#include <asm/atomic.h>
#include <asm/ebcdic.h>
@@ -514,7 +514,7 @@ void dasd_eer_disable(struct dasd_device *device)
* to transfer in a readbuffer, which is protected by the readbuffer_mutex.
*/
static char readbuffer[PAGE_SIZE];
-static DECLARE_MUTEX(readbuffer_mutex);
+static DEFINE_MUTEX(readbuffer_mutex);
static int dasd_eer_open(struct inode *inp, struct file *filp)
{
@@ -579,7 +579,7 @@ static ssize_t dasd_eer_read(struct file *filp, char __user *buf,
struct eerbuffer *eerb;
eerb = (struct eerbuffer *) filp->private_data;
- if (down_interruptible(&readbuffer_mutex))
+ if (mutex_lock_interruptible(&readbuffer_mutex))
return -ERESTARTSYS;
spin_lock_irqsave(&bufferlock, flags);
@@ -588,7 +588,7 @@ static ssize_t dasd_eer_read(struct file *filp, char __user *buf,
/* has been deleted */
eerb->residual = 0;
spin_unlock_irqrestore(&bufferlock, flags);
- up(&readbuffer_mutex);
+ mutex_unlock(&readbuffer_mutex);
return -EIO;
} else if (eerb->residual > 0) {
/* OK we still have a second half of a record to deliver */
@@ -602,7 +602,7 @@ static ssize_t dasd_eer_read(struct file *filp, char __user *buf,
if (!tc) {
/* no data available */
spin_unlock_irqrestore(&bufferlock, flags);
- up(&readbuffer_mutex);
+ mutex_unlock(&readbuffer_mutex);
if (filp->f_flags & O_NONBLOCK)
return -EAGAIN;
rc = wait_event_interruptible(
@@ -610,7 +610,7 @@ static ssize_t dasd_eer_read(struct file *filp, char __user *buf,
eerb->head != eerb->tail);
if (rc)
return rc;
- if (down_interruptible(&readbuffer_mutex))
+ if (mutex_lock_interruptible(&readbuffer_mutex))
return -ERESTARTSYS;
spin_lock_irqsave(&bufferlock, flags);
}
@@ -626,11 +626,11 @@ static ssize_t dasd_eer_read(struct file *filp, char __user *buf,
spin_unlock_irqrestore(&bufferlock, flags);
if (copy_to_user(buf, readbuffer, effective_count)) {
- up(&readbuffer_mutex);
+ mutex_unlock(&readbuffer_mutex);
return -EFAULT;
}
- up(&readbuffer_mutex);
+ mutex_unlock(&readbuffer_mutex);
return effective_count;
}
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index f6ef90e..743944a 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -487,7 +487,7 @@ struct raw3270_ua { /* Query Reply structure for Usable Area */
} __attribute__ ((packed));
static struct diag210 raw3270_init_diag210;
-static DECLARE_MUTEX(raw3270_init_sem);
+static DEFINE_MUTEX(raw3270_init_mutex);
static int
raw3270_init_irq(struct raw3270_view *view, struct raw3270_request *rq,
@@ -713,7 +713,7 @@ raw3270_size_device(struct raw3270 *rp)
{
int rc;
- down(&raw3270_init_sem);
+ mutex_lock(&raw3270_init_mutex);
rp->view = &raw3270_init_view;
raw3270_init_view.dev = rp;
if (MACHINE_IS_VM)
@@ -722,7 +722,7 @@ raw3270_size_device(struct raw3270 *rp)
rc = __raw3270_size_device(rp);
raw3270_init_view.dev = NULL;
rp->view = NULL;
- up(&raw3270_init_sem);
+ mutex_unlock(&raw3270_init_mutex);
if (rc == 0) { /* Found something. */
/* Try to find a model. */
rp->model = 0;
@@ -749,7 +749,7 @@ raw3270_reset_device(struct raw3270 *rp)
{
int rc;
- down(&raw3270_init_sem);
+ mutex_lock(&raw3270_init_mutex);
memset(&rp->init_request, 0, sizeof(rp->init_request));
memset(&rp->init_data, 0, sizeof(rp->init_data));
/* Store reset data stream to init_data/init_request */
@@ -764,7 +764,7 @@ raw3270_reset_device(struct raw3270 *rp)
rc = raw3270_start_init(rp, &raw3270_init_view, &rp->init_request);
raw3270_init_view.dev = NULL;
rp->view = NULL;
- up(&raw3270_init_sem);
+ mutex_unlock(&raw3270_init_mutex);
return rc;
}
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index a8b373f..6b264bd 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -296,30 +296,57 @@ static void ccw_device_unregister(struct ccw_device *cdev)
device_del(&cdev->dev);
}
+static void ccw_device_remove_orphan_cb(struct device *dev)
+{
+ struct ccw_device *cdev = to_ccwdev(dev);
+
+ ccw_device_unregister(cdev);
+ put_device(&cdev->dev);
+}
+
+static void ccw_device_remove_sch_cb(struct device *dev)
+{
+ struct subchannel *sch;
+
+ sch = to_subchannel(dev);
+ css_sch_device_unregister(sch);
+ /* Reset intparm to zeroes. */
+ sch->schib.pmcw.intparm = 0;
+ cio_modify(sch);
+ put_device(&sch->dev);
+}
+
static void
ccw_device_remove_disconnected(struct ccw_device *cdev)
{
- struct subchannel *sch;
unsigned long flags;
+ int rc;
+
/*
* Forced offline in disconnected state means
* 'throw away device'.
*/
if (ccw_device_is_orphan(cdev)) {
- /* Deregister ccw device. */
+ /*
+ * Deregister ccw device.
+ * Unfortunately, we cannot do this directly from the
+ * attribute method.
+ */
spin_lock_irqsave(cdev->ccwlock, flags);
cdev->private->state = DEV_STATE_NOT_OPER;
spin_unlock_irqrestore(cdev->ccwlock, flags);
- ccw_device_unregister(cdev);
- put_device(&cdev->dev);
- return ;
+ rc = device_schedule_callback(&cdev->dev,
+ ccw_device_remove_orphan_cb);
+ if (rc)
+ dev_info(&cdev->dev, "Couldn't unregister orphan\n");
+ return;
}
- sch = to_subchannel(cdev->dev.parent);
- css_sch_device_unregister(sch);
- /* Reset intparm to zeroes. */
- sch->schib.pmcw.intparm = 0;
- cio_modify(sch);
- put_device(&sch->dev);
+ /* Deregister subchannel, which will kill the ccw device. */
+ rc = device_schedule_callback(cdev->dev.parent,
+ ccw_device_remove_sch_cb);
+ if (rc)
+ dev_info(&cdev->dev,
+ "Couldn't unregister disconnected device\n");
}
int
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 898ec3b..6bba809 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -688,6 +688,12 @@ ccw_device_disband_done(struct ccw_device *cdev, int err)
ccw_device_done(cdev, DEV_STATE_BOXED);
break;
default:
+ cdev->private->flags.donotify = 0;
+ if (get_device(&cdev->dev)) {
+ PREPARE_WORK(&cdev->private->kick_work,
+ ccw_device_call_sch_unregister);
+ queue_work(ccw_device_work, &cdev->private->kick_work);
+ }
ccw_device_done(cdev, DEV_STATE_NOT_OPER);
break;
}
-
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