mac80211: unify scan and work mutexes
Having both scan and work mutexes is not just
a bit too fine grained, it also creates issues
when there's code that needs both since they
then need to be acquired in the right order,
which can be hard to do.
Therefore, use just a single mutex for both.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 79d5645..fb4363e 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -634,7 +634,6 @@
/*
* work stuff, potentially off-channel (in the future)
*/
- struct mutex work_mtx;
struct list_head work_list;
struct timer_list work_timer;
struct work_struct work_work;
@@ -746,9 +745,10 @@
*/
struct mutex key_mtx;
+ /* mutex for scan and work locking */
+ struct mutex mtx;
/* Scanning and BSS list */
- struct mutex scan_mtx;
unsigned long scanning;
struct cfg80211_ssid scan_ssid;
struct cfg80211_scan_request *int_scan_req;