smsc75xx: fix smsc75xx_set_features()

[ Upstream commit 88e80c62671ceecdbb77c902731ec95a4bfa62f9 ]

If an attempt is made to disable RX checksums, USB adapter is changed
but netdev->features is not, because smsc75xx_set_features() returns a
non zero value.

This throws errors from netdev_rx_csum_fault() :
<devname>: hw csum failure

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c
index 4cb9b11a545a9572ab6d248742ec5abee00fa7e4..2cc0f28f4fd25c069a7bd4b5e88ed65b94df16c0 100644 (file)
--- a/drivers/net/usb/smsc75xx.c
+++ b/drivers/net/usb/smsc75xx.c
@@ -957,10 +957,11 @@ static int smsc75xx_set_features(struct net_device *netdev,
        /* it's racing here! */
 
        ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
-       if (ret < 0)
+       if (ret < 0) {
                netdev_warn(dev->net, "Error writing RFE_CTL\n");
-
-       return ret;
+               return ret;
+       }
+       return 0;
 }
 
 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm)