wl12xx: Unset bssid filter, ssid and bssid from firmware on disassoc

On the disassociation event from the mac80211, the wl12xx driver does not
clear the chipset configuration related to the AP - i.e. it does not perform
a DISCONNECT and then a JOIN with zero SSID and dummy BSSID. Also, it does not
unset the BSSID filter.

Often this is not a problem, as the above is performed upon entering idle
state. But if a scenario arises where a new association is attempted without
cycling through idle state, the new association will fail.

Fix this by resetting the firmware state on disassociation.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>

diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index 31f0e2f..708ffe3 100644 (file)
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -2011,9 +2011,12 @@ static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
 
                        /* Disable the keep-alive feature */
                        ret = wl1271_acx_keep_alive_mode(wl, false);
-
                        if (ret < 0)
                                goto out_sleep;
+
+                       /* restore the bssid filter and go to dummy bssid */
+                       wl1271_unjoin(wl);
+                       wl1271_dummy_join(wl);
                }
 
        }