rt2x00: bss_info_changed() callback is allowed to sleep

The bss_info_changed() callback function no longer needs
to be atomic. Remove the scheduled work structure and
call into the driver directly.

Additionaly this makes the DRIVER_REQUIRE_SCHEDULED
flag redundant so it can be removed.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2500usb.c

@@ -1874,7 +1874,6 @@ static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 	 */
 	__set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
 	__set_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags);
-	__set_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags);
 	if (!modparam_nohwcrypt) {
 		__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
 		__set_bit(DRIVER_REQUIRE_COPY_IV, &rt2x00dev->flags);

drivers/net/wireless/rt2x00/rt2800usb.c

@@ -2634,7 +2634,6 @@ static int rt2800usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 	 * This device requires firmware.
 	 */
 	__set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags);
-	__set_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags);
 	__set_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags);
 	if (!modparam_nohwcrypt)
 		__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);

drivers/net/wireless/rt2x00/rt2x00.h

@@ -350,8 +350,6 @@ struct rt2x00_intf {
 	 */
 	unsigned int delayed_flags;
 #define DELAYED_UPDATE_BEACON		0x00000001
-#define DELAYED_CONFIG_ERP		0x00000002
-#define DELAYED_LED_ASSOC		0x00000004
 
 	/*
 	 * Software sequence counter, this is only required
@@ -614,7 +612,6 @@ enum rt2x00_flags {
 	DRIVER_REQUIRE_FIRMWARE,
 	DRIVER_REQUIRE_BEACON_GUARD,
 	DRIVER_REQUIRE_ATIM_QUEUE,
-	DRIVER_REQUIRE_SCHEDULED,
 	DRIVER_REQUIRE_DMA,
 	DRIVER_REQUIRE_COPY_IV,
 	DRIVER_REQUIRE_L2PAD,

drivers/net/wireless/rt2x00/rt2x00dev.c

@@ -123,7 +123,6 @@ static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
 {
 	struct rt2x00_dev *rt2x00dev = data;
 	struct rt2x00_intf *intf = vif_to_intf(vif);
-	struct ieee80211_bss_conf conf;
 	int delayed_flags;
 
 	/*
@@ -133,7 +132,6 @@ static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
 	 */
 	spin_lock(&intf->lock);
 
-	memcpy(&conf, &vif->bss_conf, sizeof(conf));
 	delayed_flags = intf->delayed_flags;
 	intf->delayed_flags = 0;
 
@@ -150,12 +148,6 @@ static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
 
 	if (delayed_flags & DELAYED_UPDATE_BEACON)
 		rt2x00queue_update_beacon(rt2x00dev, vif, true);
-
-	if (delayed_flags & DELAYED_CONFIG_ERP)
-		rt2x00lib_config_erp(rt2x00dev, intf, &conf);
-
-	if (delayed_flags & DELAYED_LED_ASSOC)
-		rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated);
 }
 
 static void rt2x00lib_intf_scheduled(struct work_struct *work)

drivers/net/wireless/rt2x00/rt2x00mac.c

@@ -636,23 +636,15 @@ void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
 		else
 			rt2x00dev->intf_associated--;
 
-		if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags))
-			rt2x00leds_led_assoc(rt2x00dev,
-					     !!rt2x00dev->intf_associated);
-		else
-			delayed |= DELAYED_LED_ASSOC;
+		rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated);
 	}
 
 	/*
 	 * When the erp information has changed, we should perform
 	 * additional configuration steps. For all other changes we are done.
 	 */
-	if (changes & ~(BSS_CHANGED_ASSOC | BSS_CHANGED_HT)) {
-		if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags))
-			rt2x00lib_config_erp(rt2x00dev, intf, bss_conf);
-		else
-			delayed |= DELAYED_CONFIG_ERP;
-	}
+	if (changes & ~(BSS_CHANGED_ASSOC | BSS_CHANGED_HT))
+		rt2x00lib_config_erp(rt2x00dev, intf, bss_conf);
 
 	spin_lock(&intf->lock);
 	if (delayed) {

drivers/net/wireless/rt2x00/rt73usb.c

@@ -2151,7 +2151,6 @@ static int rt73usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 	 * This device requires firmware.
 	 */
 	__set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags);
-	__set_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags);
 	if (!modparam_nohwcrypt)
 		__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);