[ 13/74] iwlwifi: mvm: take the seqno from packet if transmit failed

From: Greg Kroah-Hartman
Date: Mon Aug 26 2013 - 21:27:07 EST


3.10-stable review patch. If anyone has any objections, please let me know.

------------------

From: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>

commit ebea2f32e814445f94f9e087b646f1cf4d55fa5a upstream.

The fw is unreliable in all the cases in which the packet
wasn't sent.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/net/wireless/iwlwifi/mvm/tx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/wireless/iwlwifi/mvm/tx.c
+++ b/drivers/net/wireless/iwlwifi/mvm/tx.c
@@ -610,8 +610,8 @@ static void iwl_mvm_rx_tx_cmd_single(str
!(info->flags & IEEE80211_TX_STAT_ACK))
info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;

- /* W/A FW bug: seq_ctl is wrong when the queue is flushed */
- if (status == TX_STATUS_FAIL_FIFO_FLUSHED) {
+ /* W/A FW bug: seq_ctl is wrong when the status isn't success */
+ if (status != TX_STATUS_SUCCESS) {
struct ieee80211_hdr *hdr = (void *)skb->data;
seq_ctl = le16_to_cpu(hdr->seq_ctrl);
}


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