commit a12c3694aeb0321d5e6a50321c63881bd92a1bf2
author Matt Fleming <matt.fleming@intel.com> Fri May 11 10:58:04 2012 +1000
committer Al Viro <viro@zeniv.linux.org.uk> Mon May 21 23:52:33 2012 -0400
tree 3ba754f5809032912f9f11c58447ce99f289521d
parent de8f2ddd69fc817b66138b36d656a2973d6afd8a

microblaze: no need to reset handler if SA_ONESHOT

get_signal_to_deliver() already resets the signal handler if SA_ONESHOT is
set in ka->sa.sa_flags, there's no need to do it again in handle_signal().
 Furthermore, because we were modifying ka->sa.sa_handler (which is a copy
of sighand->action[]) instead of sighand->action[] the original code
actually had no effect on signal delivery.

Acked-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/microblaze/kernel/signal.c

diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index 90de06d..9e749c0 100644
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -320,9 +320,6 @@
 	else
 		setup_rt_frame(sig, ka, NULL, oldset, regs);
 
-	if (ka->sa.sa_flags & SA_ONESHOT)
-		ka->sa.sa_handler = SIG_DFL;
-
 	if (!(ka->sa.sa_flags & SA_NODEFER)) {
 		spin_lock_irq(&current->sighand->siglock);
 		sigorsets(&current->blocked,