treewide: Use fallthrough pseudo-keyword
Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.
[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index 03942c3..b03d142 100644
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c
@@ -675,7 +675,7 @@ static int key_extract_l3l4(struct sk_buff *skb, struct sw_flow_key *key)
case -EINVAL:
memset(&key->ip, 0, sizeof(key->ip));
memset(&key->ipv6.addr, 0, sizeof(key->ipv6.addr));
- /* fall-through */
+ fallthrough;
case -EPROTO:
skb->transport_header = skb->network_header;
error = 0;