[arm-platforms:irq/generic_handle_domain_irq 16/22] kernel/irq/chip.c:501:13: error: static declaration of 'handle_nested_irq' follows non-static declaration
kernel test robot
lkp at intel.com
Tue Jul 27 11:09:02 PDT 2021
tree: https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git irq/generic_handle_domain_irq
head: d3126d1af248cba3b70342748d77c2825f37eec2
commit: 56b521c481e166d4c7c488bc59752d96f9723b64 [16/22] genirq: Extract __handle_nested_irq() as a primitive for handle_hested_irq()
config: s390-randconfig-r034-20210727 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project c658b472f3e61e1818e1909bf02f3d65470018a5)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install s390 cross compiling tool for clang build
# apt-get install binutils-s390x-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/commit/?id=56b521c481e166d4c7c488bc59752d96f9723b64
git remote add arm-platforms https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git
git fetch --no-tags arm-platforms irq/generic_handle_domain_irq
git checkout 56b521c481e166d4c7c488bc59752d96f9723b64
# save the attached .config to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=s390 SHELL=/bin/bash kernel/irq/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp at intel.com>
All error/warnings (new ones prefixed by >>):
In file included from kernel/irq/chip.c:11:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:36:59: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
^
In file included from kernel/irq/chip.c:11:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
^
In file included from kernel/irq/chip.c:11:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> kernel/irq/chip.c:458:6: warning: no previous prototype for function '__handle_nested_irq_desc' [-Wmissing-prototypes]
void __handle_nested_irq_desc(struct irq_desc *desc)
^
kernel/irq/chip.c:458:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void __handle_nested_irq_desc(struct irq_desc *desc)
^
static
>> kernel/irq/chip.c:501:13: error: static declaration of 'handle_nested_irq' follows non-static declaration
static void handle_nested_irq(unsigned int irq)
^
include/linux/irq.h:660:13: note: previous declaration is here
extern void handle_nested_irq(unsigned int irq);
^
13 warnings and 1 error generated.
vim +/handle_nested_irq +501 kernel/irq/chip.c
449
450 /*
451 * __handle_nested_irq_desc - Handle a nested irq from a irq thread
452 * @desc: the interrupt descriptor
453 *
454 * Handle interrupts which are nested into a threaded interrupt
455 * handler. The handler function is called inside the calling
456 * threads context.
457 */
> 458 void __handle_nested_irq_desc(struct irq_desc *desc)
459 {
460 struct irqaction *action;
461 irqreturn_t action_ret;
462
463 might_sleep();
464
465 raw_spin_lock_irq(&desc->lock);
466
467 desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
468
469 action = desc->action;
470 if (unlikely(!action || irqd_irq_disabled(&desc->irq_data))) {
471 desc->istate |= IRQS_PENDING;
472 goto out_unlock;
473 }
474
475 kstat_incr_irqs_this_cpu(desc);
476 irqd_set(&desc->irq_data, IRQD_IRQ_INPROGRESS);
477 raw_spin_unlock_irq(&desc->lock);
478
479 action_ret = IRQ_NONE;
480 for_each_action_of_desc(desc, action)
481 action_ret |= action->thread_fn(action->irq, action->dev_id);
482
483 if (!irq_settings_no_debug(desc))
484 note_interrupt(desc, action_ret);
485
486 raw_spin_lock_irq(&desc->lock);
487 irqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS);
488
489 out_unlock:
490 raw_spin_unlock_irq(&desc->lock);
491 }
492
493 /*
494 * handle_nested_irq - Handle a nested irq from a irq thread
495 * @irq: the interrupt number
496 *
497 * Handle interrupts which are nested into a threaded interrupt
498 * handler. The handler function is called inside the calling
499 * threads context.
500 */
> 501 static void handle_nested_irq(unsigned int irq)
502 {
503 __handle_nested_irq(irq_to_desc(irq));
504 }
505 EXPORT_SYMBOL_GPL(handle_nested_irq);
506
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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