powerpc/32: Mark both tmp variables as unused

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):

  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
  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

Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index a46de00..492f034 100644 (file)
--- 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;