Re: [PATCH v2] drm/nouveau: Only select ACPI_VIDEO if its dependencies are met

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Ben Hutchings <ben@xxxxxxxxxxxxxxx> writes:

> CONFIG_ACPI_VIDEO depends on more than just CONFIG_ACPI, so add those
> dependencies to the Kconfig select condition and make the code
> conditional on CONFIG_ACPI_VIDEO.
>
> Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
> ---
> On Sat, 2010-12-25 at 16:21 +0100, Francisco Jerez wrote:
> [...]
>> > --- a/drivers/gpu/drm/nouveau/Makefile
>> > +++ b/drivers/gpu/drm/nouveau/Makefile
>> > @@ -30,6 +30,6 @@ nouveau-y := nouveau_drv.o nouveau_state.o nouveau_channel.o nouveau_mem.o \
>> >  nouveau-$(CONFIG_DRM_NOUVEAU_DEBUG) += nouveau_debugfs.o
>> >  nouveau-$(CONFIG_COMPAT) += nouveau_ioc32.o
>> >  nouveau-$(CONFIG_DRM_NOUVEAU_BACKLIGHT) += nouveau_backlight.o
>> > -nouveau-$(CONFIG_ACPI) += nouveau_acpi.o
>> > +nouveau-$(CONFIG_ACPI_VIDEO) += nouveau_acpi.o
>> >  
>> Not sure this makes sense, most of the code in nouveau_acpi.c doesn't
>> depend on ACPI_VIDEO at all. Do you really need to do it? Apparently all
>> the ACPI_VIDEO functions will be turned into stubs (see "acpi/video.h")
>> on kernels without ACPI_VIDEO support.
> [...]
>
> You're right; there's no need for the changes outside of Kconfig.
>
Thanks, I've pushed this to the Nouveau kernel tree, with a small
clarification to the commit message.

> Ben.
>
>  drivers/gpu/drm/nouveau/Kconfig |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
> index 72730e9..21d6c29 100644
> --- a/drivers/gpu/drm/nouveau/Kconfig
> +++ b/drivers/gpu/drm/nouveau/Kconfig
> @@ -10,7 +10,7 @@ config DRM_NOUVEAU
>  	select FB
>  	select FRAMEBUFFER_CONSOLE if !EMBEDDED
>  	select FB_BACKLIGHT if DRM_NOUVEAU_BACKLIGHT
> -	select ACPI_VIDEO if ACPI
> +	select ACPI_VIDEO if ACPI && X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL && INPUT
>  	help
>  	  Choose this option for open-source nVidia support.
>  
> -- 
> 1.7.2.3

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