| From foo@baz Thu Jun 15 15:00:53 CEST 2017 |
| From: hayeswang <hayeswang@realtek.com> |
| Date: Thu, 26 Jan 2017 09:38:33 +0800 |
| Subject: r8152: re-schedule napi for tx |
| |
| From: hayeswang <hayeswang@realtek.com> |
| |
| |
| [ Upstream commit 248b213ad908b88db15941202ef7cb7eb137c1a0 ] |
| |
| Re-schedule napi after napi_complete() for tx, if it is necessay. |
| |
| In r8152_poll(), if the tx is completed after tx_bottom() and before |
| napi_complete(), the scheduling of napi would be lost. Then, no |
| one handles the next tx until the next napi_schedule() is called. |
| |
| Signed-off-by: Hayes Wang <hayeswang@realtek.com> |
| Signed-off-by: David S. Miller <davem@davemloft.net> |
| Signed-off-by: Sasha Levin <alexander.levin@verizon.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| drivers/net/usb/r8152.c | 3 +++ |
| 1 file changed, 3 insertions(+) |
| |
| --- a/drivers/net/usb/r8152.c |
| +++ b/drivers/net/usb/r8152.c |
| @@ -1936,6 +1936,9 @@ static int r8152_poll(struct napi_struct |
| napi_complete(napi); |
| if (!list_empty(&tp->rx_done)) |
| napi_schedule(napi); |
| + else if (!skb_queue_empty(&tp->tx_queue) && |
| + !list_empty(&tp->tx_free)) |
| + napi_schedule(napi); |
| } |
| |
| return work_done; |
