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net: mscc: ocelot: Fix uninitialized error in ocelot_netdevice_event() 

With gcc-4.1.2:

    drivers/net/ethernet/mscc/ocelot.c: In function ‘ocelot_netdevice_event’:
    drivers/net/ethernet/mscc/ocelot.c:1129: warning: ‘ret’ may be used uninitialized in this function

If the list iterated over by netdev_for_each_lower_dev() is empty, ret
is never initialized, and converted into a notifier return value.

Fix this by preinitializing ret to zero.

Fixes: a556c76adc ("net: mscc: Add initial Ocelot switch support")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Geert Uytterhoeven 2018-06-07 15:10:30 +02:00 committed by David S. Miller
parent eb55bbf865
commit 2ac0e1524d
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/mscc/ocelot.c
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@ -1126,7 +1126,7 @@ static int ocelot_netdevice_event(struct notifier_block *unused,
{
struct netdev_notifier_changeupper_info *info = ptr;
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
int ret;
int ret = 0;
if (netif_is_lag_master(dev)) {
struct net_device *slave;