From: Kristian Evensen kristian.evensen@gmail.com
[ Upstream commit 057d49334c02a79af81c30a8d240e641bd6f1741 ]
When the QMI_WWAN_FLAG_PASS_THROUGH is set, netif_rx() is called from qmi_wwan_rx_fixup(). When the call to netif_rx() is successful (which is most of the time), usbnet_skb_return() is called (from rx_process()). usbnet_skb_return() will then call netif_rx() a second time for the same skb.
Simplify the code and avoid the redundant netif_rx() call by changing qmi_wwan_rx_fixup() to always return 1 when QMI_WWAN_FLAG_PASS_THROUGH is set. We then leave it up to the existing infrastructure to call netif_rx().
Suggested-by: Bjørn Mork bjorn@mork.no Signed-off-by: Kristian Evensen kristian.evensen@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/usb/qmi_wwan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index 6700f1970b24..bc55ec739af9 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -575,7 +575,7 @@ static int qmi_wwan_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
if (info->flags & QMI_WWAN_FLAG_PASS_THROUGH) { skb->protocol = htons(ETH_P_MAP); - return (netif_rx(skb) == NET_RX_SUCCESS); + return 1; }
switch (skb->data[0] & 0xf0) {