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MIPS: Fix syscall tracing interface

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Fix pointer computation for stack-based arguments.

Signed-off-by: Lars Persson <larper@axis.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6620/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Lars Persson 2014-03-17 12:14:13 +01:00 committed by Ralf Baechle
parent a8031d2ce1
commit 86ca57b5a5
1 changed files with 2 additions and 2 deletions
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4
arch/mips/include/asm/syscall.h
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@ -40,14 +40,14 @@ static inline unsigned long mips_get_syscall_arg(unsigned long *arg,
#ifdef CONFIG_32BIT
case 4: case 5: case 6: case 7:
return get_user(*arg, (int *)usp + 4 * n);
return get_user(*arg, (int *)usp + n);
#endif
#ifdef CONFIG_64BIT
case 4: case 5: case 6: case 7:
#ifdef CONFIG_MIPS32_O32
if (test_thread_flag(TIF_32BIT_REGS))
return get_user(*arg, (int *)usp + 4 * n);
return get_user(*arg, (int *)usp + n);
else
#endif
*arg = regs->regs[4 + n];