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From d68f4e43a46ff1f772ff73085f96d44eb4163e9d Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Mon, 16 Dec 2019 14:18:42 +0100
Subject: [PATCH] mt76: fix LED link time failure
Git-commit: d68f4e43a46ff1f772ff73085f96d44eb4163e9d
Patch-mainline: v5.5
References: jsc#SLE-13430

The mt76_led_cleanup() function is called unconditionally, which
leads to a link error when CONFIG_LEDS is a loadable module or
disabled but mt76 is built-in:

Drivers/net/wireless/mediatek/mt76/mac80211.o: In function `mt76_unregister_device':
mac80211.c:(.text+0x2ac): undefined reference to `led_classdev_unregister'

Use the same trick that is guarding the registration, using an
IS_ENABLED() check for the CONFIG_MT76_LEDS symbol that indicates
whether LEDs can be used or not.

Fixes: 36f7e2b2bb1d ("mt76: do not use devm API for led classdev")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/wireless/mediatek/mt76/mac80211.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index b9f2a401041a..96018fd65779 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -378,7 +378,8 @@ void mt76_unregister_device(struct mt76_dev *dev)
 {
 	struct ieee80211_hw *hw = dev->hw;
 
-	mt76_led_cleanup(dev);
+	if (IS_ENABLED(CONFIG_MT76_LEDS))
+		mt76_led_cleanup(dev);
 	mt76_tx_status_check(dev, NULL, true);
 	ieee80211_unregister_hw(hw);
 }
-- 
2.16.4