Messages in this thread Patch in this message | | | From | Geert Uytterhoeven <> | Subject | [PATCH] net: mscc: ocelot: Fix uninitialized error in ocelot_netdevice_event() | Date | Thu, 7 Jun 2018 15:10:30 +0200 |
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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: a556c76adc052c97 ("net: mscc: Add initial Ocelot switch support") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> --- This may be unlikely to happen, but given the notifier is called for any (also non-ocelot) network device, better be safe than sorry. --- drivers/net/ethernet/mscc/ocelot.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c index c8c74aa548d96e00..fb2c8f8071e64d3b 100644 --- a/drivers/net/ethernet/mscc/ocelot.c +++ b/drivers/net/ethernet/mscc/ocelot.c @@ -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; -- 2.7.4
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