linux-kernel - RE: 5ada28bf76752 causes compilation error if !CONFIG_LEDS

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Date:	Tue, 16 Nov 2010 17:41:33 +0000
From:	"Berg, Johannes" <johannes.berg@...el.com>
To:	Michal Hocko <mhocko@...e.cz>
CC:	LKML <linux-kernel@...r.kernel.org>
Subject: RE: 5ada28bf76752 causes compilation error if !CONFIG_LEDS_CLASS

> it seems that your patch (5ada28bf76752e33dce3d807bf0dfbe6d1b943ad)
> causes the following compilatation error:
>   LD      .tmp_vmlinux1
> drivers/built-in.o: In function `led_trigger_set':
> drivers/leds/led-triggers.c:116: undefined reference to
> `led_brightness_set'
> make[1]: *** [.tmp_vmlinux1] Error 1
> 
> AFAICS, led_brightness_set is defined in drivers/leds/led-class.c which
> is compiled only if CONFIG_LEDS_CLASS is configured which is not my
> case (after make oldconfig with all default values from 37-rc1).
> 
> I am not sure what is the right solution whether CONFIG_LEDS_TRIGGERS
> should depend on CONFIG_LEDS_CLASS or the patch should be reverted.
> 
> My config is attached, if somebody need it.

Hmm, we did find that, and I made a patch to fix up the Kconfig, that apparently hasn't made it in? Bit confused now.

johannes
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