Le 25/02/2018 à 18:22, Mathieu Malaterre a écrit :
Since the value of `tmp` is never intended to be read, declare both `tmp` variables as unused. Fix warning (treated as error in W=1):
What about using fault_in_pages_readable() instead ? Christophe
CC arch/powerpc/kernel/signal_32.o arch/powerpc/kernel/signal_32.c: In function ‘sys_swapcontext’: arch/powerpc/kernel/signal_32.c:1048:16: error: variable ‘tmp’ set but not used [-Werror=unused-but-set-variable] unsigned char tmp; ^~~ arch/powerpc/kernel/signal_32.c: In function ‘sys_debug_setcontext’: arch/powerpc/kernel/signal_32.c:1234:16: error: variable ‘tmp’ set but not used [-Werror=unused-but-set-variable] unsigned char tmp; ^~~ cc1: all warnings being treated as errors Signed-off-by: Mathieu Malaterre <ma...@debian.org> --- arch/powerpc/kernel/signal_32.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index a46de0035214..492f03451877 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -1045,7 +1045,7 @@ long sys_swapcontext(struct ucontext __user *old_ctx, struct ucontext __user *new_ctx, int ctx_size, int r6, int r7, int r8, struct pt_regs *regs) { - unsigned char tmp; + unsigned char tmp __maybe_unused; int ctx_has_vsx_region = 0;#ifdef CONFIG_PPC64@@ -1231,7 +1231,7 @@ int sys_debug_setcontext(struct ucontext __user *ctx, { struct sig_dbg_op op; int i; - unsigned char tmp; + unsigned char tmp __maybe_unused; unsigned long new_msr = regs->msr; #ifdef CONFIG_PPC_ADV_DEBUG_REGS unsigned long new_dbcr0 = current->thread.debug.dbcr0;
