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authorValentin Vidic <vvidic@valentin-vidic.from.hr>2019-10-15 22:20:20 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-11-06 12:43:38 +0100
commit18efc2e3889e4d4a0e4901d342fc7206a30c0b9e (patch)
tree5a0db4d2d084de689465c041f72d54bf64d313d8
parent5f1b77f0137b62e781a0d7a7cf7bb94157da9d9c (diff)
net: usb: sr9800: fix uninitialized local variable
commit 77b6d09f4ae66d42cd63b121af67780ae3d1a5e9 upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/net/usb/sr9800.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/usb/sr9800.c b/drivers/net/usb/sr9800.c
index 35f39f23d881..8f8c9ede88c2 100644
--- a/drivers/net/usb/sr9800.c
+++ b/drivers/net/usb/sr9800.c
@@ -336,7 +336,7 @@ 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);