[PATCH RESEND][next] igb: Fix fall-through warnings for Clang

[Gustavo A. R. Silva]

In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple
warnings by explicitly adding multiple break statements instead of just
letting the code fall through to the next case.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>
---
 drivers/net/ethernet/intel/igb/e1000_phy.c   | 1 +
 drivers/net/ethernet/intel/igb/igb_ethtool.c | 1 +
 drivers/net/ethernet/intel/igb/igb_ptp.c     | 1 +
 3 files changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/intel/igb/e1000_phy.c b/drivers/net/ethernet/intel/igb/e1000_phy.c
index 8c8eb82e6272..a018000f7db9 100644
--- a/drivers/net/ethernet/intel/igb/e1000_phy.c
+++ b/drivers/net/ethernet/intel/igb/e1000_phy.c
@@ -836,6 +836,7 @@ s32 igb_copper_link_setup_igp(struct e1000_hw *hw)
 			break;
 		case e1000_ms_auto:
 			data &= ~CR_1000T_MS_ENABLE;
+			break;
 		default:
 			break;
 		}
diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c b/drivers/net/ethernet/intel/igb/igb_ethtool.c
index 28baf203459a..486d3e67d3a9 100644
--- a/drivers/net/ethernet/intel/igb/igb_ethtool.c
+++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c
@@ -3022,6 +3022,7 @@ static int igb_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
 		break;
 	case ETHTOOL_SRXCLSRLDEL:
 		ret = igb_del_ethtool_nfc_entry(adapter, cmd);
+		break;
 	default:
 		break;
 	}
diff --git a/drivers/net/ethernet/intel/igb/igb_ptp.c b/drivers/net/ethernet/intel/igb/igb_ptp.c
index 7cc5428c3b3d..f3ff565da0a1 100644
--- a/drivers/net/ethernet/intel/igb/igb_ptp.c
+++ b/drivers/net/ethernet/intel/igb/igb_ptp.c
@@ -1008,6 +1008,7 @@ static int igb_ptp_set_timestamp_mode(struct igb_adapter *adapter,
 	switch (config->tx_type) {
 	case HWTSTAMP_TX_OFF:
 		tsync_tx_ctl = 0;
+		break;
 	case HWTSTAMP_TX_ON:
 		break;
 	default:
-- 
2.27.0