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MIPS: Fix build error seen in some configurations

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The following build error is seen if CONFIG_32BIT is undefined,
CONFIG_64BIT is defined, and CONFIG_MIPS32_O32 is undefined.

asm/syscall.h: In function 'mips_get_syscall_arg':
arch/mips/include/asm/syscall.h:32:16: error: unused variable 'usp' [-Werror=unused-variable]
cc1: all warnings being treated as errors

Fixes: c0ff3c53d4 ('MIPS: Enable HAVE_ARCH_TRACEHOOK')
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: David Daney <david.daney@cavium.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6160/
This commit is contained in:
Guenter Roeck 2013-11-25 15:21:00 -08:00 committed by Ralf Baechle
parent b2e4f1560f
commit 63238f2cc5
1 changed files with 1 additions and 1 deletions
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2
arch/mips/include/asm/syscall.h
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@ -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 usp __maybe_unused = regs->regs[29];
switch (n) {
case 0: case 1: case 2: case 3: