net: e1000: annotate switch/case fallthrough

The E1000 driver uses an implicit switch/case fallthrough for sharing
some code supporting different PHYs.

Add our "fallthrough;" statement-like macro before the two labels in
e1000_set_phy_type(), to avoid a warning when GCC's -Wimplicit-fallthrough
warning option is enabled.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>

diff --git a/drivers/net/e1000.c b/drivers/net/e1000.c
index 8f432b8..b772980 100644 (file)
--- a/drivers/net/e1000.c
+++ b/drivers/net/e1000.c
@@ -4830,6 +4830,7 @@ static int e1000_set_phy_type (struct e1000_hw *hw)
                        hw->phy_type = e1000_phy_igp;
                        break;
                }
+               fallthrough;
        case IGP03E1000_E_PHY_ID:
                hw->phy_type = e1000_phy_igp_3;
                break;
@@ -4843,6 +4844,7 @@ static int e1000_set_phy_type (struct e1000_hw *hw)
                        hw->phy_type = e1000_phy_gg82563;
                        break;
                }
+               fallthrough;
        case BME1000_E_PHY_ID:
                hw->phy_type = e1000_phy_bm;
                break;