wl12xx: AP mode - don't regulate FW blocks for non-active STAs

Check a STA is associated before regulating its PS-status in mac80211.
Should never happen, so warn as a precaution.

[Small cosmetic change wrt Kalle Valo's comment. -- Luca]

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/tx.c b/drivers/net/wireless/wl12xx/tx.c
index b6b2d3ac75cf..b876e9eb4e83 100644
--- a/drivers/net/wireless/wl12xx/tx.c
+++ b/drivers/net/wireless/wl12xx/tx.c
@@ -30,6 +30,7 @@
 #include "reg.h"
 #include "ps.h"
 #include "tx.h"
+#include "event.h"
 
 static int wl1271_set_default_wep_key(struct wl1271 *wl, u8 id)
 {
@@ -132,6 +133,9 @@ static void wl1271_tx_regulate_link(struct wl1271 *wl, u8 hlid)
         if (hlid < WL1271_AP_STA_HLID_START)
                 return;
 
+        if (WARN_ON(!wl1271_is_active_sta(wl, hlid)))
+            return;
+
         fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
         tx_pkts = wl->links[hlid].allocated_pkts;