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@xxxxxxxxx> 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@xxxxxxxxxxxx
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