[PATCH] net: usb: sr9800: fix uninitialized local variable

From: Valentin Vidic
Date: Tue Oct 15 2019 - 16:20:38 EST


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

Reported-by: syzbot+f1842130bbcfb335bac1@xxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Valentin Vidic <vvidic@xxxxxxxxxxxxxxxxxxxxxx>
---
drivers/net/usb/sr9800.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/usb/sr9800.c b/drivers/net/usb/sr9800.c
index c5d4a0060124..681e0def6356 100644
--- a/drivers/net/usb/sr9800.c
+++ b/drivers/net/usb/sr9800.c
@@ -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);
--
2.20.1