audit: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warning:

kernel/auditfilter.c: In function ‘audit_krule_to_data’:
kernel/auditfilter.c:668:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (krule->pflags & AUDIT_LOGINUID_LEGACY && !f->val) {
       ^
kernel/auditfilter.c:674:3: note: here
   default:
   ^~~~~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

Notice that, in this particular case, the code comment is modified
in accordance with what GCC is expecting to find.

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <[email protected]>
Signed-off-by: Paul Moore <[email protected]>

diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index add360b46b38c25944de7074bbbf94563d140d4e..63f8b3f26fab452b171fd5ba662d3e1b801999c3 100644 (file)
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -670,7 +670,7 @@ static struct audit_rule_data *audit_krule_to_data(struct audit_krule *krule)
                                data->values[i] = AUDIT_UID_UNSET;
                                break;
                        }
-                       /* fallthrough if set */
+                       /* fall through - if set */
                default:
                        data->values[i] = f->val;
                }