4.4-stable review patch. If anyone has any objections, please let me know.
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From: Eric Dumazet edumazet@google.com
[ 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 --- drivers/net/usb/smsc75xx.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -945,10 +945,11 @@ static int smsc75xx_set_features(struct /* 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)