b43: Fix suspend/resume

patch 7be1bb6b798d506693d2d8668e801951996b5a4a in mainline.

This patch makes suspend/resume work with the b43 driver.
We must not overwrite the MAC addresses in the init function, as this
would also overwrite the MAC on resume. With an all-zero MAC the device
firmware is not able to ACK any received packets anymore.
Fix this by moving the initializion stuff that must be done on init but
not on resume to the start function.
Also zero out filter_flags to make sure we don't have some flags
from a previous instance for a tiny timeframe until mac80211 reconfigures
them.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 1c93b4f4bfe37abd7f65b7687a945652d337ead0..d5389f3e89df82cd69bb5094f98af396292a2271 100644 (file)
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -3395,8 +3395,6 @@ static int b43_wireless_core_init(struct b43_wldev *dev)
        b43_bluetooth_coext_enable(dev);
 
        ssb_bus_powerup(bus, 1);        /* Enable dynamic PCTL */
-       memset(wl->bssid, 0, ETH_ALEN);
-       memset(wl->mac_addr, 0, ETH_ALEN);
        b43_upload_card_macaddress(dev);
        b43_security_init(dev);
        b43_rng_init(wl);
@@ -3493,6 +3491,13 @@ static int b43_start(struct ieee80211_hw *hw)
        int did_init = 0;
        int err = 0;
 
+       /* Kill all old instance specific information to make sure
+        * the card won't use it in the short timeframe between start
+        * and mac80211 reconfiguring it. */
+       memset(wl->bssid, 0, ETH_ALEN);
+       memset(wl->mac_addr, 0, ETH_ALEN);
+       wl->filter_flags = 0;
+
        /* First register RFkill.
         * LEDs that are registered later depend on it. */
        b43_rfkill_init(dev);