1 files changed, 7 insertions, 40 deletions

diff --git a/kernel/compat.c b/kernel/compat.c
index 38b1d2c1cbe8..9214dcd087b7 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -890,10 +890,9 @@ compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese,
 {
         compat_sigset_t s32;
         sigset_t s;
-        int sig;
         struct timespec t;
         siginfo_t info;
-        long ret, timeout = 0;
+        long ret;
 
         if (sigsetsize != sizeof(sigset_t))
                 return -EINVAL;
@@ -901,51 +900,19 @@ compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese,
         if (copy_from_user(&s32, uthese, sizeof(compat_sigset_t)))
                 return -EFAULT;
         sigset_from_compat(&s, &s32);
-        sigdelsetmask(&s,sigmask(SIGKILL)|sigmask(SIGSTOP));
-        signotset(&s);
 
         if (uts) {
-                if (get_compat_timespec (&t, uts))
+                if (get_compat_timespec(&t, uts))
                         return -EFAULT;
-                if (t.tv_nsec >= 1000000000L || t.tv_nsec < 0
-                                || t.tv_sec < 0)
-                        return -EINVAL;
         }
 
-        spin_lock_irq(&current->sighand->siglock);
-        sig = dequeue_signal(current, &s, &info);
-        if (!sig) {
-                timeout = MAX_SCHEDULE_TIMEOUT;
-                if (uts)
-                        timeout = timespec_to_jiffies(&t)
-                                +(t.tv_sec || t.tv_nsec);
-                if (timeout) {
-                        current->real_blocked = current->blocked;
-                        sigandsets(&current->blocked, &current->blocked, &s);
-
-                        recalc_sigpending();
-                        spin_unlock_irq(&current->sighand->siglock);
-
-                        timeout = schedule_timeout_interruptible(timeout);
-
-                        spin_lock_irq(&current->sighand->siglock);
-                        sig = dequeue_signal(current, &s, &info);
-                        current->blocked = current->real_blocked;
-                        siginitset(&current->real_blocked, 0);
-                        recalc_sigpending();
-                }
-        }
-        spin_unlock_irq(&current->sighand->siglock);
+        ret = do_sigtimedwait(&s, &info, uts ? &t : NULL);
 
-        if (sig) {
-                ret = sig;
-                if (uinfo) {
-                        if (copy_siginfo_to_user32(uinfo, &info))
-                                ret = -EFAULT;
-                }
-        }else {
-                ret = timeout?-EINTR:-EAGAIN;
+        if (ret > 0 && uinfo) {
+                if (copy_siginfo_to_user32(uinfo, &info))
+                        ret = -EFAULT;
         }
+
         return ret;
 
 }