ath9k_htc: Add a module parameter to disable blink

Add an option "blink" to enable or disable the LED blink. The default
value is set to 1 so that existing users would not experience any
unexpected changes.

Signed-off-by: Hong Xu <hong@topbug.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ath/ath9k/htc.h

@@ -44,6 +44,9 @@
 
 extern struct ieee80211_ops ath9k_htc_ops;
 extern int htc_modparam_nohwcrypt;
+#ifdef CONFIG_MAC80211_LEDS
+extern int led_blink;
+#endif
 
 enum htc_phymode {
 	HTC_MODE_11NA		= 0,

drivers/net/wireless/ath/ath9k/htc_drv_gpio.c

@@ -279,6 +279,10 @@ void ath9k_init_leds(struct ath9k_htc_priv *priv)
 	else
 		priv->ah->led_pin = ATH_LED_PIN_DEF;
 
+	if (!led_blink)
+		priv->led_cdev.default_trigger =
+			ieee80211_get_radio_led_name(priv->hw);
+
 	ath9k_configure_leds(priv);
 
 	snprintf(priv->led_name, sizeof(priv->led_name),

drivers/net/wireless/ath/ath9k/htc_drv_init.c

@@ -39,6 +39,10 @@ module_param_named(ps_enable, ath9k_ps_enable, int, 0444);
 MODULE_PARM_DESC(ps_enable, "Enable WLAN PowerSave");
 
 #ifdef CONFIG_MAC80211_LEDS
+int led_blink = 1;
+module_param_named(blink, led_blink, int, 0444);
+MODULE_PARM_DESC(blink, "Enable LED blink on activity");
+
 static const struct ieee80211_tpt_blink ath9k_htc_tpt_blink[] = {
 	{ .throughput = 0 * 1024, .blink_time = 334 },
 	{ .throughput = 1 * 1024, .blink_time = 260 },