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net: usb: sr9800: fix uninitialized local variable

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Make sure res does not contain random value if the call to
sr_read_cmd fails for some reason.

Reported-by: syzbot+f1842130bbcfb335bac1@syzkaller.appspotmail.com
Signed-off-by: Valentin Vidic <vvidic@valentin-vidic.from.hr>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Valentin Vidic 2019-10-15 22:20:20 +02:00 committed by David S. Miller
parent efb86fede9
commit 77b6d09f4a
1 changed files with 1 additions and 1 deletions
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2
drivers/net/usb/sr9800.c
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@ -335,7 +335,7 @@ static void sr_set_multicast(struct net_device *net)
static int sr_mdio_read(struct net_device *net, int phy_id, int loc)
{
struct usbnet *dev = netdev_priv(net);
__le16 res;
__le16 res = 0;
mutex_lock(&dev->phy_mutex);
sr_set_sw_mii(dev);