linux-kernel - Re: [PATCH] platform/x86: dell: fix DELL_WMI

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Message-ID: <a2d38288-d78d-1c08-f710-d75cbd31a125@redhat.com>
Date:   Tue, 21 Sep 2021 14:53:59 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Randy Dunlap <rdunlap@...radead.org>, linux-kernel@...r.kernel.org
Cc:     Perry Yuan <Perry.Yuan@...l.com>, Dell.Client.Kernel@...l.com,
        platform-driver-x86@...r.kernel.org,
        Mark Gross <mgross@...ux.intel.com>
Subject: Re: [PATCH] platform/x86: dell: fix DELL_WMI_PRIVACY dependencies &
 build error

Hi,

On 9/18/21 6:48 AM, Randy Dunlap wrote:
> When DELL_WMI=y, DELL_WMI_PRIVACY=y, and LEDS_TRIGGER_AUDIO=m, there
> is a linker error since the LEDS trigger code is built as a loadable
> module. This happens because DELL_WMI_PRIVACY is a bool that depends
> on a tristate (LEDS_TRIGGER_AUDIO=m), which can be dangerous.
> 
> ld: drivers/platform/x86/dell/dell-wmi-privacy.o: in function `dell_privacy_wmi_probe':
> dell-wmi-privacy.c:(.text+0x3df): undefined reference to `ledtrig_audio_get'
> 
> Fixes: 8af9fa37b8a3 ("platform/x86: dell-privacy: Add support for Dell hardware privacy")
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: Perry Yuan <Perry.Yuan@...l.com>
> Cc: Dell.Client.Kernel@...l.com
> Cc: platform-driver-x86@...r.kernel.org
> Cc: Hans de Goede <hdegoede@...hat.com>
> Cc: Mark Gross <mgross@...ux.intel.com>

p.s.

I'll also add this to the pdx86 fixes branch and include it in my next
pdx86-fixes for 5.15 pull-req to Linus.

Regards,

Hans




> ---
>  drivers/platform/x86/dell/Kconfig |    3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> --- linux-next-20210917.orig/drivers/platform/x86/dell/Kconfig
> +++ linux-next-20210917/drivers/platform/x86/dell/Kconfig
> @@ -166,8 +166,7 @@ config DELL_WMI
>  
>  config DELL_WMI_PRIVACY
>  	bool "Dell WMI Hardware Privacy Support"
> -	depends on DELL_WMI
> -	depends on LEDS_TRIGGER_AUDIO
> +	depends on LEDS_TRIGGER_AUDIO = y || DELL_WMI = LEDS_TRIGGER_AUDIO
>  	help
>  	  This option adds integration with the "Dell Hardware Privacy"
>  	  feature of Dell laptops to the dell-wmi driver.
>