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Date: Wed, 26 Jun 2024 10:21:54 -0700 From: Nathan Chancellor <nathan@...nel.org> To: kernel test robot <lkp@...el.com> Cc: Linus Walleij <linus.walleij@...aro.org>, llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org, "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>, Sami Tolvanen <samitolvanen@...gle.com> Subject: Re: arch/arm/mm/proc.c:82:6: error: conflicting types for 'cpu_arm920_reset' On Wed, Jun 26, 2024 at 04:37:00AM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 55027e689933ba2e64f3d245fb1ff185b3e7fc81 > commit: 1a4fec49efe5273eb2fcf575175a117745f76f97 ARM: 9392/2: Support CLANG CFI > date: 8 weeks ago > config: arm-randconfig-002-20240626 (https://download.01.org/0day-ci/archive/20240626/202406260432.6WGV2jCk-lkp@intel.com/config) > compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project ad79a14c9e5ec4a369eed4adf567c22cc029863f) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240626/202406260432.6WGV2jCk-lkp@intel.com/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <lkp@...el.com> > | Closes: https://lore.kernel.org/oe-kbuild-all/202406260432.6WGV2jCk-lkp@intel.com/ > > All errors (new ones prefixed by >>): > > >> arch/arm/mm/proc.c:82:6: error: conflicting types for 'cpu_arm920_reset' > 82 | void cpu_arm920_reset(void); > | ^ > arch/arm/include/asm/proc-fns.h:96:13: note: previous declaration is here > 96 | extern void cpu_reset(unsigned long addr, bool hvc) __attribute__((noreturn)); > | ^ > arch/arm/include/asm/glue-proc.h:251:21: note: expanded from macro 'cpu_reset' > 251 | #define cpu_reset __glue(CPU_NAME,_reset) > | ^ > arch/arm/include/asm/glue.h:20:26: note: expanded from macro '__glue' > 20 | #define __glue(name,fn) ____glue(name,fn) > | ^ > arch/arm/include/asm/glue.h:16:27: note: expanded from macro '____glue' > 16 | #define ____glue(name,fn) name##fn > | ^ > <scratch space>:70:1: note: expanded from here > 70 | cpu_arm920_reset > | ^ > 1 error generated. Hmmm, it seems like the prototypes of the reset functions in arch/arm/mm/proc.c are incorrect? This builds for me with the original configuration and allmodconfig + CONFIG_CFI_CLANG=y. diff --git a/arch/arm/mm/proc.c b/arch/arm/mm/proc.c index bdbbf65d1b36..4e4b5733bd26 100644 --- a/arch/arm/mm/proc.c +++ b/arch/arm/mm/proc.c @@ -17,7 +17,7 @@ void cpu_arm7tdmi_proc_init(void); __ADDRESSABLE(cpu_arm7tdmi_proc_init); void cpu_arm7tdmi_proc_fin(void); __ADDRESSABLE(cpu_arm7tdmi_proc_fin); -void cpu_arm7tdmi_reset(void); +void cpu_arm7tdmi_reset(unsigned long addr, bool hvc) __attribute__((noreturn)); __ADDRESSABLE(cpu_arm7tdmi_reset); int cpu_arm7tdmi_do_idle(void); __ADDRESSABLE(cpu_arm7tdmi_do_idle); @@ -32,7 +32,7 @@ void cpu_arm720_proc_init(void); __ADDRESSABLE(cpu_arm720_proc_init); void cpu_arm720_proc_fin(void); __ADDRESSABLE(cpu_arm720_proc_fin); -void cpu_arm720_reset(void); +void cpu_arm720_reset(unsigned long addr, bool hvc) __attribute__((noreturn)); __ADDRESSABLE(cpu_arm720_reset); int cpu_arm720_do_idle(void); __ADDRESSABLE(cpu_arm720_do_idle); @@ -49,7 +49,7 @@ void cpu_arm740_proc_init(void); __ADDRESSABLE(cpu_arm740_proc_init); void cpu_arm740_proc_fin(void); __ADDRESSABLE(cpu_arm740_proc_fin); -void cpu_arm740_reset(void); +void cpu_arm740_reset(unsigned long addr, bool hvc) __attribute__((noreturn)); __ADDRESSABLE(cpu_arm740_reset); int cpu_arm740_do_idle(void); __ADDRESSABLE(cpu_arm740_do_idle); @@ -64,7 +64,7 @@ void cpu_arm9tdmi_proc_init(void); __ADDRESSABLE(cpu_arm9tdmi_proc_init); void cpu_arm9tdmi_proc_fin(void); __ADDRESSABLE(cpu_arm9tdmi_proc_fin); -void cpu_arm9tdmi_reset(void); +void cpu_arm9tdmi_reset(unsigned long addr, bool hvc) __attribute__((noreturn)); __ADDRESSABLE(cpu_arm9tdmi_reset); int cpu_arm9tdmi_do_idle(void); __ADDRESSABLE(cpu_arm9tdmi_do_idle); @@ -79,7 +79,7 @@ void cpu_arm920_proc_init(void); __ADDRESSABLE(cpu_arm920_proc_init); void cpu_arm920_proc_fin(void); __ADDRESSABLE(cpu_arm920_proc_fin); -void cpu_arm920_reset(void); +void cpu_arm920_reset(unsigned long addr, bool hvc) __attribute__((noreturn)); __ADDRESSABLE(cpu_arm920_reset); int cpu_arm920_do_idle(void); __ADDRESSABLE(cpu_arm920_do_idle); @@ -102,7 +102,7 @@ void cpu_arm922_proc_init(void); __ADDRESSABLE(cpu_arm922_proc_init); void cpu_arm922_proc_fin(void); __ADDRESSABLE(cpu_arm922_proc_fin); -void cpu_arm922_reset(void); +void cpu_arm922_reset(unsigned long addr, bool hvc) __attribute__((noreturn)); __ADDRESSABLE(cpu_arm922_reset); int cpu_arm922_do_idle(void); __ADDRESSABLE(cpu_arm922_do_idle); @@ -119,7 +119,7 @@ void cpu_arm925_proc_init(void); __ADDRESSABLE(cpu_arm925_proc_init); void cpu_arm925_proc_fin(void); __ADDRESSABLE(cpu_arm925_proc_fin); -void cpu_arm925_reset(void); +void cpu_arm925_reset(unsigned long addr, bool hvc) __attribute__((noreturn)); __ADDRESSABLE(cpu_arm925_reset); int cpu_arm925_do_idle(void); __ADDRESSABLE(cpu_arm925_do_idle); @@ -159,7 +159,7 @@ void cpu_arm940_proc_init(void); __ADDRESSABLE(cpu_arm940_proc_init); void cpu_arm940_proc_fin(void); __ADDRESSABLE(cpu_arm940_proc_fin); -void cpu_arm940_reset(void); +void cpu_arm940_reset(unsigned long addr, bool hvc) __attribute__((noreturn)); __ADDRESSABLE(cpu_arm940_reset); int cpu_arm940_do_idle(void); __ADDRESSABLE(cpu_arm940_do_idle); @@ -174,7 +174,7 @@ void cpu_arm946_proc_init(void); __ADDRESSABLE(cpu_arm946_proc_init); void cpu_arm946_proc_fin(void); __ADDRESSABLE(cpu_arm946_proc_fin); -void cpu_arm946_reset(void); +void cpu_arm946_reset(unsigned long addr, bool hvc) __attribute__((noreturn)); __ADDRESSABLE(cpu_arm946_reset); int cpu_arm946_do_idle(void); __ADDRESSABLE(cpu_arm946_do_idle); @@ -429,7 +429,7 @@ void cpu_v7_proc_init(void); __ADDRESSABLE(cpu_v7_proc_init); void cpu_v7_proc_fin(void); __ADDRESSABLE(cpu_v7_proc_fin); -void cpu_v7_reset(void); +void cpu_v7_reset(unsigned long addr, bool hvc) __attribute__((noreturn)); __ADDRESSABLE(cpu_v7_reset); int cpu_v7_do_idle(void); __ADDRESSABLE(cpu_v7_do_idle);
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