linux-kernel - Re: [PATCH] mt76: fix LED link time failure

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Date:   Tue, 17 Dec 2019 15:59:22 +0100
From:   Felix Fietkau <nbd@....name>
To:     Kalle Valo <kvalo@...eaurora.org>, Arnd Bergmann <arnd@...db.de>
Cc:     Lorenzo Bianconi <lorenzo.bianconi83@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Ryder Lee <ryder.lee@...iatek.com>,
        Roy Luo <royluo@...gle.com>,
        Stanislaw Gruszka <sgruszka@...hat.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mt76: fix LED link time failure

On 2019-12-17 15:35, Kalle Valo wrote:
> Arnd Bergmann <arnd@...db.de> writes:
> 
>> 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@...db.de>
> 
> Felix, as this is a regression in v5.5-rc1 can I take this directly to
> wireless-drivers?
Yes. Please add:
Acked-by: Felix Fietkau <nbd@....name>

- Felix