On Sun, Jan 18, 2015 at 11:13 PM, Hayes Wang <hayeswang@xxxxxxxxxxx> wrote:
> If a error occurs when submitting rx, skip the remaining submissions
> and try to submit them again next time.
>
> Signed-off-by: Hayes Wang <hayeswang@xxxxxxxxxxx>
> ---
> drivers/net/usb/r8152.c | 15 +++++++++++++--
> 1 file changed, 13 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
> index 2e22442..78a8917 100644
> --- a/drivers/net/usb/r8152.c
> +++ b/drivers/net/usb/r8152.c
> @@ -1655,7 +1655,7 @@ static int rx_bottom(struct r8152 *tp, int budget)
> {
> unsigned long flags;
> struct list_head *cursor, *next, rx_queue;
> - int work_done = 0;
> + int ret = 0, work_done = 0;
>
> if (!skb_queue_empty(&tp->rx_queue)) {
> while (work_done < budget) {
> @@ -1746,7 +1746,18 @@ find_next_rx:
> }
>
> submit:
> - r8152_submit_rx(tp, agg, GFP_ATOMIC);
> + if (!ret) {
> + ret = r8152_submit_rx(tp, agg, GFP_ATOMIC);
> + } else {
> + urb->actual_length = 0;
> + list_add_tail(&agg->list, next);
Do you need a spin_lock_irqsave(&tp->rx_lock, flags) around this?
> + }
> + }
> +
> + if (!list_empty(&rx_queue)) {
> + spin_lock_irqsave(&tp->rx_lock, flags);
> + list_splice_tail(&rx_queue, &tp->rx_done);
> + spin_unlock_irqrestore(&tp->rx_lock, flags);
> }
>
> out1:
> --
> 2.1.0
>
> --
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