[PATCH] phylink: mark expected switch fall-throughs in phylink_mii_ioctl

[Gustavo A. R. Silva]

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

Addresses-Coverity-ID: 1463447 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <garsi...@embeddedor.com>
---
This code was compiled with GCC 7.2.0

 drivers/net/phy/phylink.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 4e8c459..6ac8b29 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -1525,6 +1525,7 @@ int phylink_mii_ioctl(struct phylink *pl, struct ifreq 
*ifr, int cmd)
                switch (cmd) {
                case SIOCGMIIPHY:
                        mii->phy_id = pl->phydev->mdio.addr;
+                       /* fall through */
 
                case SIOCGMIIREG:
                        ret = phylink_phy_read(pl, mii->phy_id, mii->reg_num);
@@ -1547,6 +1548,7 @@ int phylink_mii_ioctl(struct phylink *pl, struct ifreq 
*ifr, int cmd)
                switch (cmd) {
                case SIOCGMIIPHY:
                        mii->phy_id = 0;
+                       /* fall through */
 
                case SIOCGMIIREG:
                        ret = phylink_mii_read(pl, mii->phy_id, mii->reg_num);
-- 
2.7.4