rt2x00: increase led's name buffer length

With 9-letter driver names phy's number was truncated
to two characters, which caused warnings when creating
sysfs entries for leds on systems with multiple devices.

Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Reviewed-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2x00leds.c

@@ -124,17 +124,15 @@ static int rt2x00leds_register_led(struct rt2x00_dev *rt2x00dev,
 
 void rt2x00leds_register(struct rt2x00_dev *rt2x00dev)
 {
-	char dev_name[16];
-	char name[32];
+	char name[36];
 	int retval;
 	unsigned long on_period;
 	unsigned long off_period;
-
-	snprintf(dev_name, sizeof(dev_name), "%s-%s",
-		 rt2x00dev->ops->name, wiphy_name(rt2x00dev->hw->wiphy));
+	const char *phy_name = wiphy_name(rt2x00dev->hw->wiphy);
 
 	if (rt2x00dev->led_radio.flags & LED_INITIALIZED) {
-		snprintf(name, sizeof(name), "%s::radio", dev_name);
+		snprintf(name, sizeof(name), "%s-%s::radio",
+			 rt2x00dev->ops->name, phy_name);
 
 		retval = rt2x00leds_register_led(rt2x00dev,
 						 &rt2x00dev->led_radio,
@@ -144,7 +142,8 @@ void rt2x00leds_register(struct rt2x00_dev *rt2x00dev)
 	}
 
 	if (rt2x00dev->led_assoc.flags & LED_INITIALIZED) {
-		snprintf(name, sizeof(name), "%s::assoc", dev_name);
+		snprintf(name, sizeof(name), "%s-%s::assoc",
+			 rt2x00dev->ops->name, phy_name);
 
 		retval = rt2x00leds_register_led(rt2x00dev,
 						 &rt2x00dev->led_assoc,
@@ -154,7 +153,8 @@ void rt2x00leds_register(struct rt2x00_dev *rt2x00dev)
 	}
 
 	if (rt2x00dev->led_qual.flags & LED_INITIALIZED) {
-		snprintf(name, sizeof(name), "%s::quality", dev_name);
+		snprintf(name, sizeof(name), "%s-%s::quality",
+			 rt2x00dev->ops->name, phy_name);
 
 		retval = rt2x00leds_register_led(rt2x00dev,
 						 &rt2x00dev->led_qual,