diff options
| -rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/rx.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/rx.c b/drivers/net/wireless/iwlwifi/pcie/rx.c index 7fc38217d76..6d71f51ef54 100644 --- a/drivers/net/wireless/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/iwlwifi/pcie/rx.c @@ -203,6 +203,17 @@ static void iwl_rx_queue_restock(struct iwl_trans *trans) struct iwl_rx_mem_buffer *rxb; unsigned long flags; + /* + * If the device isn't enabled - not need to try to add buffers... + * This can happen when we stop the device and still have an interrupt + * pending. We stop the APM before we sync the interrupts / tasklets + * because we have to (see comment there). On the other hand, since + * the APM is stopped, we cannot access the HW (in particular not prph). + * So don't try to restock if the APM has been already stopped. + */ + if (!test_bit(STATUS_DEVICE_ENABLED, &trans_pcie->status)) + return; + spin_lock_irqsave(&rxq->lock, flags); while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) { /* The overwritten rxb must be a used one */ |