b43: Remove TX spinlock

This removes the TX spinlock and defers TX to a workqueue to allow
locking wl->mutex instead and to allow sleeping for register accesses.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h
index d63af926d058..1cd470d6e2da 100644
--- a/drivers/net/wireless/b43/b43.h
+++ b/drivers/net/wireless/b43/b43.h
@@ -683,6 +683,11 @@ struct b43_wl {
          * This is scheduled when we determine that the actual TX output
          * power doesn't match what we want. */
         struct work_struct txpower_adjust_work;
+
+        /* Packet transmit work */
+        struct work_struct tx_work;
+        /* Queue of packets to be transmitted. */
+        struct sk_buff_head tx_queue;
 };
 
 /* The type of the firmware file. */