score: fix bogus restarts on sigreturn()

we *really* don't want to have restart logics hit when we are returning from
sigreturn() - random replacement of %r4 with -4 just because a signal had
been noticed from timer interrupt that came when %r4 happened to contain
-514 is not nice at all.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/score/kernel/signal.c b/arch/score/kernel/signal.c
index e382c52ca0d9..c268bbf8b410 100644
--- a/arch/score/kernel/signal.c
+++ b/arch/score/kernel/signal.c
@@ -174,6 +174,7 @@ score_rt_sigreturn(struct pt_regs *regs)
         /* It is more difficult to avoid calling this function than to
            call it and ignore errors.  */
         do_sigaltstack((stack_t __user *)&st, NULL, regs->regs[0]);
+        regs->is_syscall = 0;
 
         __asm__ __volatile__(
                 "mv\tr0, %0\n\t"