security: keys: annotate implicit fall throughs

There is a plan to build the kernel with -Wimplicit-fallthrough and
these places in the code produced warnings (W=1). Fix them up.

This commit remove the following warning:

  security/keys/process_keys.c:380:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
  security/keys/process_keys.c:404:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
  security/keys/process_keys.c:424:7: warning: this statement may fall through [-Wimplicit-fallthrough=]

Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: James Morris <james.morris@microsoft.com>

diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
index 02c77e9..3308d73 100644 (file)
--- a/security/keys/process_keys.c
+++ b/security/keys/process_keys.c
@@ -379,6 +379,7 @@ key_ref_t search_my_process_keyrings(struct keyring_search_context *ctx)
                case -EAGAIN: /* no key */
                        if (ret)
                                break;
+                       /* fall through */
                case -ENOKEY: /* negative key */
                        ret = key_ref;
                        break;
@@ -403,6 +404,7 @@ key_ref_t search_my_process_keyrings(struct keyring_search_context *ctx)
                case -EAGAIN: /* no key */
                        if (ret)
                                break;
+                       /* fall through */
                case -ENOKEY: /* negative key */
                        ret = key_ref;
                        break;
@@ -423,6 +425,7 @@ key_ref_t search_my_process_keyrings(struct keyring_search_context *ctx)
                case -EAGAIN: /* no key */
                        if (ret)
                                break;
+                       /* fall through */
                case -ENOKEY: /* negative key */
                        ret = key_ref;
                        break;