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Date: Sun, 6 Dec 2020 05:27:15 +0800
From: kernel test robot <lkp@...el.com>
To: Thomas Gleixner <tglx@...utronix.de>,
Oleksandr Natalenko <oleksandr@...alenko.name>,
bugzilla-daemon@...zilla.kernel.org
Cc: kbuild-all@...ts.01.org, jdelvare@...e.de, wsa@...nel.org,
benjamin.tissoires@...hat.com, rui.zhang@...el.com,
linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
Marc Zyngier <maz@...nel.org>,
Peter Zijlstra <peterz@...radead.org>
Subject: Re: genirq, i2c: Provide and use generic_dispatch_irq()
Hi Thomas,
I love your patch! Perhaps something to improve:
[auto build test WARNING on wsa/i2c/for-next]
[also build test WARNING on tip/irq/core linux/master linus/master v5.10-rc6 next-20201204]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Thomas-Gleixner/genirq-i2c-Provide-and-use-generic_dispatch_irq/20201206-023308
base: https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next
config: parisc-randconfig-s032-20201206 (attached as .config)
compiler: hppa-linux-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.3-179-ga00755aa-dirty
# https://github.com/0day-ci/linux/commit/79d4e8b739f9018dc2d95a25baf1199fbcf1fb03
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Thomas-Gleixner/genirq-i2c-Provide-and-use-generic_dispatch_irq/20201206-023308
git checkout 79d4e8b739f9018dc2d95a25baf1199fbcf1fb03
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=parisc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
In file included from include/linux/spinlock.h:50,
from include/linux/irq.h:14,
from kernel/irq/irqdesc.c:10:
kernel/irq/irqdesc.c: In function 'generic_dispatch_irq':
include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast
12 | (void)(&__dummy == &__dummy2); \
| ^~
include/linux/irqflags.h:159:3: note: in expansion of macro 'typecheck'
159 | typecheck(unsigned long, flags); \
| ^~~~~~~~~
include/linux/irqflags.h:202:3: note: in expansion of macro 'raw_local_irq_save'
202 | raw_local_irq_save(flags); \
| ^~~~~~~~~~~~~~~~~~
kernel/irq/irqdesc.c:669:2: note: in expansion of macro 'local_irq_save'
669 | local_irq_save(&flags);
| ^~~~~~~~~~~~~~
In file included from include/asm-generic/cmpxchg-local.h:6,
from arch/parisc/include/asm/cmpxchg.h:89,
from arch/parisc/include/asm/atomic.h:10,
from include/linux/atomic.h:7,
from arch/parisc/include/asm/bitops.h:13,
from include/linux/bitops.h:29,
from include/linux/kernel.h:12,
from include/linux/list.h:9,
from include/linux/preempt.h:11,
from include/linux/spinlock.h:51,
from include/linux/irq.h:14,
from kernel/irq/irqdesc.c:10:
include/linux/irqflags.h:160:9: error: lvalue required as left operand of assignment
160 | flags = arch_local_irq_save(); \
| ^
include/linux/irqflags.h:202:3: note: in expansion of macro 'raw_local_irq_save'
202 | raw_local_irq_save(flags); \
| ^~~~~~~~~~~~~~~~~~
kernel/irq/irqdesc.c:669:2: note: in expansion of macro 'local_irq_save'
669 | local_irq_save(&flags);
| ^~~~~~~~~~~~~~
In file included from include/linux/spinlock.h:50,
from include/linux/irq.h:14,
from kernel/irq/irqdesc.c:10:
include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast
12 | (void)(&__dummy == &__dummy2); \
| ^~
include/linux/irqflags.h:174:3: note: in expansion of macro 'typecheck'
174 | typecheck(unsigned long, flags); \
| ^~~~~~~~~
include/linux/irqflags.h:203:8: note: in expansion of macro 'raw_irqs_disabled_flags'
203 | if (!raw_irqs_disabled_flags(flags)) \
| ^~~~~~~~~~~~~~~~~~~~~~~
kernel/irq/irqdesc.c:669:2: note: in expansion of macro 'local_irq_save'
669 | local_irq_save(&flags);
| ^~~~~~~~~~~~~~
In file included from include/asm-generic/cmpxchg-local.h:6,
from arch/parisc/include/asm/cmpxchg.h:89,
from arch/parisc/include/asm/atomic.h:10,
from include/linux/atomic.h:7,
from arch/parisc/include/asm/bitops.h:13,
from include/linux/bitops.h:29,
from include/linux/kernel.h:12,
from include/linux/list.h:9,
from include/linux/preempt.h:11,
from include/linux/spinlock.h:51,
from include/linux/irq.h:14,
from kernel/irq/irqdesc.c:10:
>> kernel/irq/irqdesc.c:669:17: warning: passing argument 1 of 'arch_irqs_disabled_flags' makes integer from pointer without a cast [-Wint-conversion]
669 | local_irq_save(&flags);
| ^~~~~~
| |
| long unsigned int *
include/linux/irqflags.h:175:28: note: in definition of macro 'raw_irqs_disabled_flags'
175 | arch_irqs_disabled_flags(flags); \
| ^~~~~
kernel/irq/irqdesc.c:669:2: note: in expansion of macro 'local_irq_save'
669 | local_irq_save(&flags);
| ^~~~~~~~~~~~~~
In file included from include/linux/irqflags.h:16,
from include/asm-generic/cmpxchg-local.h:6,
from arch/parisc/include/asm/cmpxchg.h:89,
from arch/parisc/include/asm/atomic.h:10,
from include/linux/atomic.h:7,
from arch/parisc/include/asm/bitops.h:13,
from include/linux/bitops.h:29,
from include/linux/kernel.h:12,
from include/linux/list.h:9,
from include/linux/preempt.h:11,
from include/linux/spinlock.h:51,
from include/linux/irq.h:14,
from kernel/irq/irqdesc.c:10:
arch/parisc/include/asm/irqflags.h:37:59: note: expected 'long unsigned int' but argument is of type 'long unsigned int *'
37 | static inline bool arch_irqs_disabled_flags(unsigned long flags)
| ~~~~~~~~~~~~~~^~~~~
In file included from include/linux/spinlock.h:50,
from include/linux/irq.h:14,
from kernel/irq/irqdesc.c:10:
include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast
12 | (void)(&__dummy == &__dummy2); \
| ^~
include/linux/irqflags.h:174:3: note: in expansion of macro 'typecheck'
174 | typecheck(unsigned long, flags); \
| ^~~~~~~~~
include/linux/irqflags.h:209:8: note: in expansion of macro 'raw_irqs_disabled_flags'
209 | if (!raw_irqs_disabled_flags(flags)) \
| ^~~~~~~~~~~~~~~~~~~~~~~
kernel/irq/irqdesc.c:671:2: note: in expansion of macro 'local_irq_restore'
671 | local_irq_restore(&flags);
| ^~~~~~~~~~~~~~~~~
In file included from include/asm-generic/cmpxchg-local.h:6,
from arch/parisc/include/asm/cmpxchg.h:89,
from arch/parisc/include/asm/atomic.h:10,
from include/linux/atomic.h:7,
from arch/parisc/include/asm/bitops.h:13,
from include/linux/bitops.h:29,
from include/linux/kernel.h:12,
from include/linux/list.h:9,
from include/linux/preempt.h:11,
from include/linux/spinlock.h:51,
from include/linux/irq.h:14,
from kernel/irq/irqdesc.c:10:
kernel/irq/irqdesc.c:671:20: warning: passing argument 1 of 'arch_irqs_disabled_flags' makes integer from pointer without a cast [-Wint-conversion]
671 | local_irq_restore(&flags);
| ^~~~~~
| |
| long unsigned int *
include/linux/irqflags.h:175:28: note: in definition of macro 'raw_irqs_disabled_flags'
175 | arch_irqs_disabled_flags(flags); \
| ^~~~~
kernel/irq/irqdesc.c:671:2: note: in expansion of macro 'local_irq_restore'
671 | local_irq_restore(&flags);
| ^~~~~~~~~~~~~~~~~
In file included from include/linux/irqflags.h:16,
from include/asm-generic/cmpxchg-local.h:6,
from arch/parisc/include/asm/cmpxchg.h:89,
from arch/parisc/include/asm/atomic.h:10,
from include/linux/atomic.h:7,
from arch/parisc/include/asm/bitops.h:13,
from include/linux/bitops.h:29,
from include/linux/kernel.h:12,
from include/linux/list.h:9,
from include/linux/preempt.h:11,
from include/linux/spinlock.h:51,
from include/linux/irq.h:14,
from kernel/irq/irqdesc.c:10:
arch/parisc/include/asm/irqflags.h:37:59: note: expected 'long unsigned int' but argument is of type 'long unsigned int *'
37 | static inline bool arch_irqs_disabled_flags(unsigned long flags)
| ~~~~~~~~~~~~~~^~~~~
In file included from include/linux/spinlock.h:50,
from include/linux/irq.h:14,
from kernel/irq/irqdesc.c:10:
include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast
12 | (void)(&__dummy == &__dummy2); \
| ^~
include/linux/irqflags.h:164:3: note: in expansion of macro 'typecheck'
164 | typecheck(unsigned long, flags); \
| ^~~~~~~~~
include/linux/irqflags.h:211:3: note: in expansion of macro 'raw_local_irq_restore'
211 | raw_local_irq_restore(flags); \
| ^~~~~~~~~~~~~~~~~~~~~
kernel/irq/irqdesc.c:671:2: note: in expansion of macro 'local_irq_restore'
671 | local_irq_restore(&flags);
| ^~~~~~~~~~~~~~~~~
In file included from include/asm-generic/cmpxchg-local.h:6,
from arch/parisc/include/asm/cmpxchg.h:89,
from arch/parisc/include/asm/atomic.h:10,
from include/linux/atomic.h:7,
from arch/parisc/include/asm/bitops.h:13,
vim +/arch_irqs_disabled_flags +669 kernel/irq/irqdesc.c
654
655 /**
656 * generic_dispatch_irq - Dispatch an interrupt from an interrupt handler
657 * @irq: The irq number to handle
658 *
659 * A wrapper around generic_handle_irq() which ensures that interrupts are
660 * disabled when the primary handler of the dispatched irq is invoked.
661 * This is useful for interrupt handlers with dispatching to be safe for
662 * the forced threaded case.
663 */
664 int generic_dispatch_irq(unsigned int irq)
665 {
666 unsigned long flags;
667 int ret;
668
> 669 local_irq_save(&flags);
670 ret = generic_handle_irq(irq);
671 local_irq_restore(&flags);
672 return ret;
673 }
674
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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