From: Sara Sharon <sara.sharon@xxxxxxxxx>
When FW fails to get block ack, it will send the notification with
0 items in the TFD queue elements. Allow this and handle accordingly.
Fixes: c46e7724bfe9 ("iwlwifi: mvm: support new BA notification response")
Signed-off-by: Sara Sharon <sara.sharon@xxxxxxxxx>
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
---
drivers/net/wireless/intel/iwlwifi/mvm/tx.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
index 65308c4ad8b8..a3de91e5e543 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
@@ -1782,6 +1782,9 @@ void iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
ba_info.status.status_driver_data[0] =
(void *)(uintptr_t)ba_res->reduced_txp;
+ if (!le16_to_cpu(ba_res->tfd_cnt))
+ goto out;
+
/*
* TODO:
* When supporting multi TID aggregations - we need to move
@@ -1799,6 +1802,7 @@ void iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
le16_to_cpu(ba_res->tfd[0].tfd_index),
&ba_info, le32_to_cpu(ba_res->tx_rate));
+out:
IWL_DEBUG_TX_REPLY(mvm,
"BA_NOTIFICATION Received from sta_id = %d, flags %x, sent:%d, acked:%d\n",
sta_id, le32_to_cpu(ba_res->flags),
--
2.11.0
