arm: if we get into work_pending while returning to kernel mode, just go away

checking in do_signal() is pointless - if we get there with !user_mode(regs)
(and we might), we'll end up looping indefinitely.  Check in work_pending
and break out of the loop if so.

Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 0 insertions, 9 deletions

diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 3b37c14c47f5..6b37d4ddf0b6 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -609,15 +609,6 @@ static void do_signal(struct pt_regs *regs, int syscall)
         int signr;
 
         /*
-         * We want the common case to go fast, which
-         * is why we may in certain cases get here from
-         * kernel mode. Just return without doing anything
-         * if so.
-         */
-        if (!user_mode(regs))
-                return;
-
-        /*
          * If we were from a system call, check for system call restarting...
          */
         if (syscall) {