diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl3945-base.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl3945-base.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c index 82c1e0d45cf..3272608ced8 100644 --- a/drivers/net/wireless/iwlwifi/iwl3945-base.c +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c @@ -4123,9 +4123,8 @@ static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv) * Also restock the Rx queue via iwl3945_rx_queue_restock. * This is called as a scheduled work item (except for during initialization) */ -void iwl3945_rx_replenish(void *data) +static void iwl3945_rx_allocate(struct iwl3945_priv *priv) { - struct iwl3945_priv *priv = data; struct iwl3945_rx_queue *rxq = &priv->rxq; struct list_head *element; struct iwl3945_rx_mem_buffer *rxb; @@ -4158,6 +4157,26 @@ void iwl3945_rx_replenish(void *data) rxq->free_count++; } spin_unlock_irqrestore(&rxq->lock, flags); +} + +/* + * this should be called while priv->lock is locked + */ +void __iwl3945_rx_replenish(void *data) +{ + struct iwl3945_priv *priv = data; + + iwl3945_rx_allocate(priv); + iwl3945_rx_queue_restock(priv); +} + + +void iwl3945_rx_replenish(void *data) +{ + struct iwl3945_priv *priv = data; + unsigned long flags; + + iwl3945_rx_allocate(priv); spin_lock_irqsave(&priv->lock, flags); iwl3945_rx_queue_restock(priv); @@ -4335,12 +4354,16 @@ static void iwl3945_rx_handle(struct iwl3945_priv *priv) u32 r, i; int reclaim; unsigned long flags; + u8 fill_rx = 0; + u32 count = 0; /* uCode's read index (stored in shared DRAM) indicates the last Rx * buffer that the driver may process (last buffer filled by ucode). */ r = iwl3945_hw_get_rx_read(priv); i = rxq->read; + if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2)) + fill_rx = 1; /* Rx interrupt, but nothing sent from uCode */ if (i == r) IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i); @@ -4411,6 +4434,16 @@ static void iwl3945_rx_handle(struct iwl3945_priv *priv) list_add_tail(&rxb->list, &priv->rxq.rx_used); spin_unlock_irqrestore(&rxq->lock, flags); i = (i + 1) & RX_QUEUE_MASK; + /* If there are a lot of unused frames, + * restock the Rx queue so ucode won't assert. */ + if (fill_rx) { + count++; + if (count >= 8) { + priv->rxq.read = i; + __iwl3945_rx_replenish(priv); + count = 0; + } + } } /* Backtrack one entry */ |