linux-kernel - [PATCH] x86: signal: change type of paramter for sys_rt

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Date:	Fri, 05 Dec 2008 17:17:09 -0800
From:	Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] x86: signal: change type of paramter for sys_rt_sigreturn()

From: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>

Impact: cleanup on 32-bit

Peter pointed this parameter can be changed.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
---
 arch/x86/include/asm/syscalls.h |    2 +-
 arch/x86/kernel/signal.c        |    6 ++----
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/syscalls.h b/arch/x86/include/asm/syscalls.h
index 87803da..3a5252c 100644
--- a/arch/x86/include/asm/syscalls.h
+++ b/arch/x86/include/asm/syscalls.h
@@ -33,7 +33,7 @@ asmlinkage int sys_sigaction(int, const struct old_sigaction __user *,
 			     struct old_sigaction __user *);
 asmlinkage int sys_sigaltstack(unsigned long);
 asmlinkage unsigned long sys_sigreturn(unsigned long);
-asmlinkage int sys_rt_sigreturn(unsigned long);
+asmlinkage int sys_rt_sigreturn(struct pt_regs);
 
 /* kernel/ioport.c */
 asmlinkage long sys_iopl(unsigned long);
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index b1f4d34..b1cc6da 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -642,11 +642,9 @@ badframe:
 }
 
 #ifdef CONFIG_X86_32
-asmlinkage int sys_rt_sigreturn(unsigned long __unused)
+asmlinkage int sys_rt_sigreturn(struct pt_regs regs)
 {
-	struct pt_regs *regs = (struct pt_regs *)&__unused;
-
-	return do_rt_sigreturn(regs);
+	return do_rt_sigreturn(&regs);
 }
 #else /* !CONFIG_X86_32 */
 asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
-- 
1.6.0.4

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