[PATCH net 2/2] r8152: set rx mode early when linking on

From: Hayes Wang
Date: Fri Feb 02 2018 - 03:44:32 EST


Set rx mode before calling netif_wake_queue() when linking on to avoid
the device missing the receiving packets.

The transmission may start after calling netif_wake_queue(), and the
packets of resopnse may reach before calling rtl8152_set_rx_mode()
which let the device could receive packets. Then, the packets of
response would be missed.

Signed-off-by: Hayes Wang <hayeswang@xxxxxxxxxxx>
---
drivers/net/usb/r8152.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 756de9ea8d2e..958b2e8b90f6 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -3795,11 +3795,12 @@ static void set_carrier(struct r8152 *tp)
if (speed & LINK_STATUS) {
if (!netif_carrier_ok(netdev)) {
tp->rtl_ops.enable(tp);
- set_bit(RTL8152_SET_RX_MODE, &tp->flags);
netif_stop_queue(netdev);
napi_disable(napi);
netif_carrier_on(netdev);
rtl_start_rx(tp);
+ clear_bit(RTL8152_SET_RX_MODE, &tp->flags);
+ _rtl8152_set_rx_mode(netdev);
napi_enable(&tp->napi);
netif_wake_queue(netdev);
netif_info(tp, link, netdev, "carrier on\n");
@@ -4259,7 +4260,7 @@ static int rtl8152_post_reset(struct usb_interface *intf)
mutex_lock(&tp->control);
tp->rtl_ops.enable(tp);
rtl_start_rx(tp);
- rtl8152_set_rx_mode(netdev);
+ _rtl8152_set_rx_mode(netdev);
mutex_unlock(&tp->control);
}

--
2.13.6