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smsc95xx: check return value of smsc95xx_reset

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[ 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>
This commit is contained in:
Andre Edich 2020-07-06 10:39:34 +02:00 committed by Greg Kroah-Hartman
parent 0740535e79
commit dc524e4086
1 changed files with 6 additions and 0 deletions
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6
drivers/net/usb/smsc95xx.c
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@ -1292,6 +1292,8 @@ 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);
@ -1320,6 +1322,10 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
schedule_delayed_work(&pdata->carrier_check, CARRIER_CHECK_DELAY);
return 0;
free_pdata:
kfree(pdata);
return ret;
}
static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf)