Commit ef2e3004 authored by Ido Yariv's avatar Ido Yariv Committed by Luciano Coelho

wl12xx: Restart TX when TX descriptors are available

The driver stops sending TX packets when either there aren't enough
memory blocks, or it runs out of TX descriptors. The driver continues to
send packets to the FW only when more memory blocks are available.

The FW might free TX descriptors without freeing the corresponding
memory blocks, especially when dynamic memory is enabled. In cases where
memory blocks are not freed at all, the driver will keep waiting for
more memory blocks indefinitely.

Fix this by clearing the WL1271_FLAG_FW_TX_BUSY flag when there are
available TX descriptors.
Signed-off-by: default avatarIdo Yariv <ido@wizery.com>
Signed-off-by: default avatarLuciano Coelho <coelho@ti.com>
parent ae825e4b
......@@ -65,6 +65,9 @@ static int wl1271_alloc_tx_id(struct wl1271 *wl, struct sk_buff *skb)
static void wl1271_free_tx_id(struct wl1271 *wl, int id)
{
if (__test_and_clear_bit(id, wl->tx_frames_map)) {
if (unlikely(wl->tx_frames_cnt == ACX_TX_DESCRIPTORS))
clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags);
wl->tx_frames[id] = NULL;
wl->tx_frames_cnt--;
}
......
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