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macvlan: Mark expected switch fall-through

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

This patch fixes the following warning:

drivers/net/macvlan.c: In function ‘macvlan_do_ioctl’:
drivers/net/macvlan.c:839:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (!net_eq(dev_net(dev), &init_net))
      ^
drivers/net/macvlan.c:841:2: note: here
  case SIOCGHWTSTAMP:
  ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gustavo A. R. Silva 2019-05-20 09:44:49 -05:00 committed by David S. Miller
parent 135dd9594f
commit 02596252db
1 changed files with 1 additions and 0 deletions
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1
drivers/net/macvlan.c
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@ -838,6 +838,7 @@ static int macvlan_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
case SIOCSHWTSTAMP:
if (!net_eq(dev_net(dev), &init_net))
break;
/* fall through */
case SIOCGHWTSTAMP:
if (netif_device_present(real_dev) && ops->ndo_do_ioctl)
err = ops->ndo_do_ioctl(real_dev, &ifrr, cmd);