1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h
index eff2a158a41..37783cdd301 100644
--- a/drivers/net/wireless/b43/b43.h
+++ b/drivers/net/wireless/b43/b43.h
@@ -691,6 +691,10 @@ struct b43_wl {
 
         struct mutex mutex;
         spinlock_t irq_lock;
+        /* R/W lock for data transmission.
+         * Transmissions on 2+ queues can run concurrently, but somebody else
+         * might sync with TX by write_lock_irqsave()'ing. */
+        rwlock_t tx_lock;
         /* Lock for LEDs access. */
         spinlock_t leds_lock;
         /* Lock for SHM access. */