linux-kernel - Re: [PATCH v2] drm/gma500: depend on framebuffer

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Date:   Fri, 8 Apr 2022 21:12:55 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     James Hilliard <james.hilliard1@...il.com>,
        dri-devel@...ts.freedesktop.org
Cc:     Patrik Jakobsson <patrik.r.jakobsson@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] drm/gma500: depend on framebuffer



On 4/8/22 20:44, James Hilliard wrote:
> This appears to be needed for video output to function correctly.
> 
> Signed-off-by: James Hilliard <james.hilliard1@...il.com>
> ---
> Changes v1 -> v2:
>   - use depends instead of select

Thanks.

> ---
>  drivers/gpu/drm/gma500/Kconfig | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/gma500/Kconfig b/drivers/gpu/drm/gma500/Kconfig
> index 0cff20265f97..8ea87bfa95f5 100644
> --- a/drivers/gpu/drm/gma500/Kconfig
> +++ b/drivers/gpu/drm/gma500/Kconfig
> @@ -2,6 +2,8 @@
>  config DRM_GMA500
>  	tristate "Intel GMA500/600/3600/3650 KMS Framebuffer"
>  	depends on DRM && PCI && X86 && MMU
> +	depends on FB
> +	depends on FB_EFI || !EFI

I'm OK with the second line of the first patch:

+	select FB_EFI if EFI

It's just that a single driver shouldn't enable an entire subsystem (like FB)
on its own. But once FB is set (depends on in this patch), selecting
FB_EFI would be OK IMO.

>  	select DRM_KMS_HELPER
>  	# GMA500 depends on ACPI_VIDEO when ACPI is enabled, just like i915
>  	select ACPI_VIDEO if ACPI

-- 
~Randy