igb_main: Mark expected switch fall-throughs

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

Addresses-Coverity-ID: 200521 ("Missing break in switch")
Addresses-Coverity-ID: 114797 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 25720d95d4ea..221a735dc956 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -5176,6 +5176,7 @@ bool igb_has_link(struct igb_adapter *adapter)
         case e1000_media_type_copper:
                 if (!hw->mac.get_link_status)
                         return true;
+                /* fall through */
         case e1000_media_type_internal_serdes:
                 hw->mac.ops.check_for_link(hw);
                 link_active = !hw->mac.get_link_status;
@@ -5836,6 +5837,7 @@ csum_failed:
                         type_tucmd = E1000_ADVTXD_TUCMD_L4T_SCTP;
                         break;
                 }
+                /* fall through */
         default:
                 skb_checksum_help(skb);
                 goto csum_failed;