When CONFIG_PPC_FPU is defined the prototype exposed in asm/switch_to.h is:
extern void giveup_fpu(struct task_struct *); Change the function prototype of __giveup_fpu to static. Fix warning (treated as error in W=1): CC arch/powerpc/kernel/process.o arch/powerpc/kernel/process.c:176:6: error: no previous prototype for ‘__giveup_fpu’ [-Werror=missing-prototypes] void __giveup_fpu(struct task_struct *tsk) ^~~~~~~~~~~~ cc1: all warnings being treated as errors Signed-off-by: Mathieu Malaterre <ma...@debian.org> --- arch/powerpc/kernel/process.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 1738c4127b32..3ac98c0463d6 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -173,7 +173,7 @@ void __msr_check_and_clear(unsigned long bits) EXPORT_SYMBOL(__msr_check_and_clear); #ifdef CONFIG_PPC_FPU -void __giveup_fpu(struct task_struct *tsk) +static void __giveup_fpu(struct task_struct *tsk) { unsigned long msr; -- 2.11.0