unicore32: if there's no handler we need to restore sigmask, syscall or no syscall

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

arch/unicore32/kernel/signal.c

@@ -447,15 +447,12 @@ static void do_signal(struct pt_regs *regs, int syscall)
 		    regs->UCreg_00 == -ERESTARTNOINTR) {
 			setup_syscall_restart(regs);
 		}
-
-		/* If there's no signal to deliver, we just put the saved
-		 * sigmask back.
-		 */
-		if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
-			clear_thread_flag(TIF_RESTORE_SIGMASK);
-			sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
-		}
 	}
+	/* If there's no signal to deliver, we just put the saved
+	 * sigmask back.
+	 */
+	if (test_and_clear_thread_flag(TIF_RESTORE_SIGMASK))
+		set_current_blocked(&current->saved_sigmask);
 }
 
 asmlinkage void do_notify_resume(struct pt_regs *regs,