kernel/signal.c: annotate implicit fall through

There is a plan to build the kernel with -Wimplicit-fallthrough and this
place in the code produced a warning (W=1).

This commit remove the following warning:

  kernel/signal.c:795:13: warning: this statement may fall through [-Wimplicit-fallthrough=]

Link: http://lkml.kernel.org/r/20190114203505.17875-1-malat@debian.org
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Acked-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/kernel/signal.c b/kernel/signal.c
index 62f9aea..c4dd664 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -840,6 +840,7 @@ static int check_kill_permission(int sig, struct kernel_siginfo *info,
                         */
                        if (!sid || sid == task_session(current))
                                break;
+                       /* fall through */
                default:
                        return -EPERM;
                }