From: Lars Persson <lars.persson@axis.com>
Date: Mon, 17 Mar 2014 11:14:13 +0000 (+0100)
Subject: MIPS: Fix syscall tracing interface
X-Git-Tag: upstream/snapshot3+hdmi~3280^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=86ca57b5a5525dbf89fc2a3285781fae807276b0;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

MIPS: Fix syscall tracing interface

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>
---

diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h
index a7e8a53..f35b131 100644
--- a/arch/mips/include/asm/syscall.h
+++ b/arch/mips/include/asm/syscall.h
@@ -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];