From: Arik Nemtsov <arik@xxxxxxxxxx>
The firmware only asks for one dummy packet at a time, but sometimes we
are unable to provide it before a FW timer expires. When this happens,
the FW will re-request the dummy packet. If a packet is still queued in
the driver queues, do nothing in this case.
This prevents spurious dummy packets from clogging up the VO AC.
Signed-off-by: Arik Nemtsov <arik@xxxxxxxxxx>
Signed-off-by: Eliad Peller <eliad@xxxxxxxxxx>
---
drivers/net/wireless/wl12xx/main.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index f1fd991..aeb4cc5 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -1540,7 +1540,13 @@ out:
int wl1271_tx_dummy_packet(struct wl1271 *wl)
{
unsigned long flags;
- int q = wl1271_tx_get_queue(skb_get_queue_mapping(wl->dummy_packet));
+ int q;
+
+ /* no need to queue a new dummy packet if one is already pending */
+ if (test_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags))
+ return 0;
+
+ q = wl1271_tx_get_queue(skb_get_queue_mapping(wl->dummy_packet));
spin_lock_irqsave(&wl->wl_lock, flags);
set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags);
--
1.7.6.401.g6a319
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