x86: use sizeof(long) to unify signal_32|64.c

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/kernel/signal_32.c b/arch/x86/kernel/signal_32.c
index 9eb23fb..47c85e6 100644 (file)
--- a/arch/x86/kernel/signal_32.c
+++ b/arch/x86/kernel/signal_32.c
@@ -214,11 +214,12 @@ badframe:
 
 asmlinkage int sys_rt_sigreturn(unsigned long __unused)
 {
-       struct pt_regs *regs = (struct pt_regs *) &__unused;
-       struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(regs->sp - 4);
+       struct pt_regs *regs = (struct pt_regs *)&__unused;
+       struct rt_sigframe __user *frame;
        sigset_t set;
        int ax;
 
+       frame = (struct rt_sigframe __user *)(regs->sp - sizeof(long));
        if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
                goto badframe;
        if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))

diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c
index b7d7a6d..1045a07 100644 (file)
--- a/arch/x86/kernel/signal_64.c
+++ b/arch/x86/kernel/signal_64.c
@@ -133,13 +133,11 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
        sigset_t set;
        unsigned long ax;
 
-       frame = (struct rt_sigframe __user *)(regs->sp - 8);
-       if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) {
+       frame = (struct rt_sigframe __user *)(regs->sp - sizeof(long));
+       if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
                goto badframe;
-       } 
-       if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) { 
+       if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
                goto badframe;
-       } 
 
        sigdelsetmask(&set, ~_BLOCKABLE);
        spin_lock_irq(&current->sighand->siglock);