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iwlwifi: mvm: allow block ack response without data 

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: c46e7724bf ("iwlwifi: mvm: support new BA notification response")
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Sara Sharon 2017-02-19 17:00:58 +02:00 committed by Luca Coelho
parent f4d1047914
commit 9b1ea16763
1 changed files with 4 additions and 0 deletions
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4
drivers/net/wireless/intel/iwlwifi/mvm/tx.c
View File

@ -1785,6 +1785,9 @@ 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
@ -1802,6 +1805,7 @@ 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),