smsc95xx: check return value of smsc95xx_reset

[ Upstream commit 7c8b1e855f94f88a0c569be6309fc8d5c8844cd1 ]

The return value of the function smsc95xx_reset() must be checked
to avoid returning false success from the function smsc95xx_bind().

Fixes: 2f7ca802bdae2 ("net: Add SMSC LAN9500 USB2.0 10/100 ethernet adapter driver")
Signed-off-by: Andre Edich <andre.edich@microchip.com>
Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index b6b8aec73b28020d297917033fc1c485baa26580..8037a2e51a7893ddce5eb5d7a65a59382dd53e4b 100644 (file)
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -1136,6 +1136,8 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
 
        /* Init all registers */
        ret = smsc95xx_reset(dev);
+       if (ret)
+               goto free_pdata;
 
        /* detect device revision as different features may be available */
        ret = smsc95xx_read_reg(dev, ID_REV, &val);
@@ -1157,6 +1159,10 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
        dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM;
        dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
        return 0;
+
+free_pdata:
+       kfree(pdata);
+       return ret;
 }
 
 static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf)