wl1271: workaround to send a disconnect before rejoining

We don't get any indication from the stack when we have disassociated.  In
wl1271, it is important to send a CMD_DISCONNECT before joining again,
because the firmware cleans some things up.  So we check if we're already
joined and disconnect if that's the case.

Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Reviewed-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c
index 3662715..b9f2091 100644
--- a/drivers/net/wireless/wl12xx/wl1271_main.c
+++ b/drivers/net/wireless/wl12xx/wl1271_main.c
@@ -648,6 +648,8 @@
 	wl->tx_security_seq_32 = 0;
 	wl->time_offset = 0;
 	wl->session_counter = 0;
+	wl->joined = false;
+
 	for (i = 0; i < NUM_TX_QUEUES; i++)
 		wl->tx_blocks_freed[i] = 0;
 
@@ -1395,6 +1397,7 @@
 	wl->basic_rate_set = WL1271_DEFAULT_BASIC_RATE_SET;
 	wl->band = IEEE80211_BAND_2GHZ;
 	wl->vif = NULL;
+	wl->joined = false;
 
 	for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
 		wl->tx_frames[i] = NULL;