diff options
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00usb.c | 66 |
1 files changed, 40 insertions, 26 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c index aec6440d364a..4c5ae3d45625 100644 --- a/drivers/net/wireless/rt2x00/rt2x00usb.c +++ b/drivers/net/wireless/rt2x00/rt2x00usb.c @@ -208,8 +208,7 @@ static void rt2x00usb_interrupt_txdone(struct urb *urb) struct queue_entry *entry = (struct queue_entry *)urb->context; struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; - if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags) || - !__test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) + if (!__test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) return; /* @@ -227,7 +226,9 @@ static void rt2x00usb_interrupt_txdone(struct urb *urb) * Schedule the delayed work for reading the TX status * from the device. */ - ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->txdone_work); + if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) && + test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) + ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->txdone_work); } static void rt2x00usb_kick_tx_entry(struct queue_entry *entry) @@ -279,6 +280,14 @@ static void rt2x00usb_kill_tx_entry(struct queue_entry *entry) if ((entry->queue->qid == QID_BEACON) && (test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags))) usb_kill_urb(bcn_priv->guardian_urb); + + /* + * We need a short delay here to wait for + * the URB to be canceled + */ + do { + udelay(100); + } while (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)); } void rt2x00usb_kill_tx_queue(struct data_queue *queue) @@ -290,8 +299,7 @@ EXPORT_SYMBOL_GPL(rt2x00usb_kill_tx_queue); static void rt2x00usb_watchdog_tx_dma(struct data_queue *queue) { - struct queue_entry *entry; - struct queue_entry_priv_usb *entry_priv; + struct rt2x00_dev *rt2x00dev = queue->rt2x00dev; unsigned short threshold = queue->threshold; WARNING(queue->rt2x00dev, "TX queue %d DMA timed out," @@ -305,28 +313,33 @@ static void rt2x00usb_watchdog_tx_dma(struct data_queue *queue) * queue from being enabled during the txdone handler. */ queue->threshold = queue->limit; - ieee80211_stop_queue(queue->rt2x00dev->hw, queue->qid); + ieee80211_stop_queue(rt2x00dev->hw, queue->qid); /* - * Reset all currently uploaded TX frames. + * Kill all entries in the queue, afterwards we need to + * wait a bit for all URBs to be cancelled. */ - while (!rt2x00queue_empty(queue)) { - entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE); - entry_priv = entry->priv_data; - usb_kill_urb(entry_priv->urb); + rt2x00usb_kill_tx_queue(queue); - /* - * We need a short delay here to wait for - * the URB to be canceled - */ - do { - udelay(100); - } while (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)); + /* + * In case that a driver has overriden the txdone_work + * function, we invoke the TX done through there. + */ + rt2x00dev->txdone_work.func(&rt2x00dev->txdone_work); - /* - * Invoke the TX done handler - */ - rt2x00usb_work_txdone_entry(entry); + /* + * Security measure: if the driver did override the + * txdone_work function, and the hardware did arrive + * in a state which causes it to malfunction, it is + * possible that the driver couldn't handle the txdone + * event correctly. So after giving the driver the + * chance to cleanup, we now force a cleanup of any + * leftovers. + */ + if (!rt2x00queue_empty(queue)) { + WARNING(queue->rt2x00dev, "TX queue %d DMA timed out," + " status handling failed, invoke hard reset", queue->qid); + rt2x00usb_work_txdone(&rt2x00dev->txdone_work); } /* @@ -334,7 +347,7 @@ static void rt2x00usb_watchdog_tx_dma(struct data_queue *queue) * queue again. */ queue->threshold = threshold; - ieee80211_wake_queue(queue->rt2x00dev->hw, queue->qid); + ieee80211_wake_queue(rt2x00dev->hw, queue->qid); } static void rt2x00usb_watchdog_tx_status(struct data_queue *queue) @@ -394,8 +407,7 @@ static void rt2x00usb_interrupt_rxdone(struct urb *urb) struct queue_entry *entry = (struct queue_entry *)urb->context; struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; - if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags) || - !__test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) + if (!__test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) return; /* @@ -415,7 +427,9 @@ static void rt2x00usb_interrupt_rxdone(struct urb *urb) * Schedule the delayed work for reading the RX status * from the device. */ - ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->rxdone_work); + if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) && + test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) + ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->rxdone_work); } /* |