[PATCH 3.18 007/150] ath9k_hw: fix hardware queue allocation

From: Greg Kroah-Hartman
Date: Wed Jan 14 2015 - 03:52:30 EST


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

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

From: Felix Fietkau <nbd@xxxxxxxxxxx>

commit ad8fdccf9c197a89e2d2fa78c453283dcc2c343f upstream.

The driver passes the desired hardware queue index for a WMM data queue
in qinfo->tqi_subtype. This was ignored in ath9k_hw_setuptxqueue, which
instead relied on the order in which the function is called.

Reported-by: Hubert Feurstein <h.feurstein@xxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/net/wireless/ath/ath9k/mac.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)

--- a/drivers/net/wireless/ath/ath9k/mac.c
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -311,14 +311,7 @@ int ath9k_hw_setuptxqueue(struct ath_hw
q = ATH9K_NUM_TX_QUEUES - 3;
break;
case ATH9K_TX_QUEUE_DATA:
- for (q = 0; q < ATH9K_NUM_TX_QUEUES; q++)
- if (ah->txq[q].tqi_type ==
- ATH9K_TX_QUEUE_INACTIVE)
- break;
- if (q == ATH9K_NUM_TX_QUEUES) {
- ath_err(common, "No available TX queue\n");
- return -1;
- }
+ q = qinfo->tqi_subtype;
break;
default:
ath_err(common, "Invalid TX queue type: %u\n", type);


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/