wl12xx: don't queue a new dummy packet if one is already pending
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@wizery.com> Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: Luciano Coelho <coelho@ti.com>
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@ -1540,7 +1540,13 @@ out:
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int wl1271_tx_dummy_packet(struct wl1271 *wl)
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{
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unsigned long flags;
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int q = wl1271_tx_get_queue(skb_get_queue_mapping(wl->dummy_packet));
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int q;
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/* no need to queue a new dummy packet if one is already pending */
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if (test_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags))
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return 0;
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q = wl1271_tx_get_queue(skb_get_queue_mapping(wl->dummy_packet));
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spin_lock_irqsave(&wl->wl_lock, flags);
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set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags);
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