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>

1 files changed, 0 insertions, 3 deletions

diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index 90de06da3f6f..9e749c032af8 100644
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -320,9 +320,6 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
         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,