diff options
| -rw-r--r-- | drivers/net/wireless/ath/ath12k/dp.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/net/wireless/ath/ath12k/dp.c b/drivers/net/wireless/ath/ath12k/dp.c index 61aa78d8bd8c..abddeafabfa1 100644 --- a/drivers/net/wireless/ath/ath12k/dp.c +++ b/drivers/net/wireless/ath/ath12k/dp.c @@ -1202,10 +1202,16 @@ static void ath12k_dp_cc_cleanup(struct ath12k_base *ab) if (!skb) continue; - skb_cb = ATH12K_SKB_CB(skb); - ar = skb_cb->ar; - if (atomic_dec_and_test(&ar->dp.num_tx_pending)) - wake_up(&ar->dp.tx_empty_waitq); + /* if we are unregistering, hw would've been destroyed and + * ar is no longer valid. + */ + if (!(test_bit(ATH12K_FLAG_UNREGISTERING, &ab->dev_flags))) { + skb_cb = ATH12K_SKB_CB(skb); + ar = skb_cb->ar; + + if (atomic_dec_and_test(&ar->dp.num_tx_pending)) + wake_up(&ar->dp.tx_empty_waitq); + } dma_unmap_single(ab->dev, ATH12K_SKB_CB(skb)->paddr, skb->len, DMA_TO_DEVICE); |