Attempting to compile a 64-bit kernel without CONFIG_MIPS32_O32 defined
(using GCC 4.8.1) results in the following compilation error:
arch/mips/include/asm/syscall.h: In function 'mips_get_syscall_arg':
arch/mips/include/asm/syscall.h:32:16: error: unused variable 'usp' [-Werror=unused-variable]
Fix by adding __maybe_unsued to the definition of usp.
Signed-off-by: Alex Smith <alex.smith@xxxxxxxxxx>
Reviewed-by: Markos Chandras <markos.chandras@xxxxxxxxxx>
---
arch/mips/include/asm/syscall.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h
index 81c8913..c48f8d8 100644
--- a/arch/mips/include/asm/syscall.h
+++ b/arch/mips/include/asm/syscall.h
@@ -29,7 +29,7 @@ static inline long syscall_get_nr(struct task_struct *task,
static inline unsigned long mips_get_syscall_arg(unsigned long *arg,
struct task_struct *task, struct pt_regs *regs, unsigned int n)
{
- unsigned long usp = regs->regs[29];
+ unsigned long __maybe_unused usp = regs->regs[29];
switch (n) {
case 0: case 1: case 2: case 3:
--
1.8.5.2
