netdev - [PATCH net v2 1/2] smsc95xx: check return value of smsc95xx

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Message-ID: <20200706083935.19040-2-andre.edich@microchip.com>
Date:   Mon, 6 Jul 2020 10:39:34 +0200
From:   Andre Edich <andre.edich@...rochip.com>
To:     <netdev@...r.kernel.org>, <UNGLinuxDriver@...rochip.com>,
        <steve.glendinning@...well.net>
CC:     <Parthiban.Veerasooran@...rochip.com>,
        Andre Edich <andre.edich@...rochip.com>
Subject: [PATCH net v2 1/2] smsc95xx: check return value of smsc95xx_reset

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@...rochip.com>
Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@...rochip.com>
---
 drivers/net/usb/smsc95xx.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 3cf4dc3433f9..eb404bb74e18 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -1287,6 +1287,8 @@ 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);
@@ -1317,6 +1319,10 @@ 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)
-- 
2.27.0