[PATCH] drivers:net:wireless: Add proper locking for the function, b43_op_beacon_set_tim in main.c

[Nicholas Krause <xerofoify-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

This adds proper locking for the function, b43_op_beacon_set_tim in main.c by using the mutex lock
in the structure pointer wl, as embedded into this pointer as a mutex in order to protect against
multiple access to the pointer wl when updating the templates for this pointer in the function,
b43_update_templates internally in the function, b43_op_beacon_set_tim.

Signed-off-by: Nicholas Krause <xerofoify-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 drivers/net/wireless/b43/main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 47731cb..d568fc8 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -5094,8 +5094,9 @@ static int b43_op_beacon_set_tim(struct ieee80211_hw *hw,
 {
 	struct b43_wl *wl = hw_to_b43_wl(hw);
 
-	/* FIXME: add locking */
+	mutex_lock(&wl->mutex);
 	b43_update_templates(wl);
+	mutex_unlock(&wl->mutex);
 
 	return 0;
 }
-- 
2.1.0