diff options
Diffstat (limited to 'drivers/net/tg3.c')
| -rw-r--r-- | drivers/net/tg3.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index e795c33b982d..30b1cca8144c 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -3576,7 +3576,7 @@ static int tg3_poll_work(struct tg3 *tp, int work_done, int budget) if (sblk->idx[0].tx_consumer != tp->tx_cons) { tg3_tx(tp); if (unlikely(tp->tg3_flags & TG3_FLAG_TX_RECOVERY_PENDING)) - return 0; + return work_done; } /* run RX thread, within the bounds set by NAPI. @@ -3593,6 +3593,7 @@ static int tg3_poll(struct napi_struct *napi, int budget) { struct tg3 *tp = container_of(napi, struct tg3, napi); int work_done = 0; + struct tg3_hw_status *sblk = tp->hw_status; while (1) { work_done = tg3_poll_work(tp, work_done, budget); @@ -3603,15 +3604,17 @@ static int tg3_poll(struct napi_struct *napi, int budget) if (unlikely(work_done >= budget)) break; - if (likely(!tg3_has_work(tp))) { - struct tg3_hw_status *sblk = tp->hw_status; - - if (tp->tg3_flags & TG3_FLAG_TAGGED_STATUS) { - tp->last_tag = sblk->status_tag; - rmb(); - } else - sblk->status &= ~SD_STATUS_UPDATED; + if (tp->tg3_flags & TG3_FLAG_TAGGED_STATUS) { + /* tp->last_tag is used in tg3_restart_ints() below + * to tell the hw how much work has been processed, + * so we must read it before checking for more work. + */ + tp->last_tag = sblk->status_tag; + rmb(); + } else + sblk->status &= ~SD_STATUS_UPDATED; + if (likely(!tg3_has_work(tp))) { netif_rx_complete(tp->dev, napi); tg3_restart_ints(tp); break; @@ -3621,9 +3624,10 @@ static int tg3_poll(struct napi_struct *napi, int budget) return work_done; tx_recovery: + /* work_done is guaranteed to be less than budget. */ netif_rx_complete(tp->dev, napi); schedule_work(&tp->reset_task); - return 0; + return work_done; } static void tg3_irq_quiesce(struct tg3 *tp) |