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ethtool: return error from ethnl_ops_begin if dev is NULL 

Julian reported that after d43c65b05b Coverity complains about a
missing check whether dev is NULL in ethnl_ops_complete().
There doesn't seem to be any valid case where dev could be NULL when
calling ethnl_ops_begin(), therefore return an error if dev is NULL.

Fixes: d43c65b05b ("ethtool: runtime-resume netdev parent in ethnl_ops_begin")
Reported-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiner Kallweit 2021-08-05 21:08:22 +02:00 committed by David S. Miller
parent 5c0418ed16
commit 596690e9f4
1 changed files with 2 additions and 2 deletions
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4
net/ethtool/netlink.c
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@ -35,7 +35,7 @@ int ethnl_ops_begin(struct net_device *dev)
int ret;
if (!dev)
return 0;
return -ENODEV;
if (dev->dev.parent)
pm_runtime_get_sync(dev->dev.parent);
@ -61,7 +61,7 @@ err:
void ethnl_ops_complete(struct net_device *dev)
{
if (dev && dev->ethtool_ops->complete)
if (dev->ethtool_ops->complete)
dev->ethtool_ops->complete(dev);
if (dev->dev.parent)