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authorSujith Manoharan <c_manoha@qca.qualcomm.com>2013-04-23 12:22:18 +0530
committerJohn W. Linville <linville@tuxdriver.com>2013-04-23 14:14:54 -0400
commit07236bf3c659d1823262c1dabec4fa05990df115 (patch)
tree3f82ccb90770f650b0b7366136813d330d44a9d8
parente87f3d538e5c3a561ddd97eab02706ff3973e7da (diff)
ath9k: Use lockless variants for the RX fifo queue
The RX fifo can be accessed from the common tasklet or it can be reaped/cleaned when RX is stopped, which is done when doing a reset or channel change - this happens in process context. Since it is ensured that there are no pending tasklets when stopping RX and cleaning the FIFO, there is no need to use SKB queue functions which take internal locks. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Acked-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/ath/ath9k/recv.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index c8265a74d2f9..9c0045e3e5c2 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -124,7 +124,7 @@ static bool ath_rx_edma_buf_link(struct ath_softc *sc,
SKB_CB_ATHBUF(skb) = bf;
ath9k_hw_addrxbuf_edma(ah, bf->bf_buf_addr, qtype);
- skb_queue_tail(&rx_edma->rx_fifo, skb);
+ __skb_queue_tail(&rx_edma->rx_fifo, skb);
return true;
}
@@ -155,7 +155,7 @@ static void ath_rx_remove_buffer(struct ath_softc *sc,
rx_edma = &sc->rx.rx_edma[qtype];
- while ((skb = skb_dequeue(&rx_edma->rx_fifo)) != NULL) {
+ while ((skb = __skb_dequeue(&rx_edma->rx_fifo)) != NULL) {
bf = SKB_CB_ATHBUF(skb);
BUG_ON(!bf);
list_add_tail(&bf->list, &sc->rx.rxbuf);