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Message-ID: <7950bcea-0f15-da2e-e4f7-4bfa474a420f@riseup.net>
Date: Fri, 4 Aug 2023 13:23:36 -0300
From: Arthur Grillo <arthurgrillo@...eup.net>
To: Javier Martinez Canillas <javierm@...hat.com>,
linux-kernel@...r.kernel.org
Cc: Arnd Bergmann <arnd@...db.de>,
Randy Dunlap <rdunlap@...radead.org>,
Daniel Vetter <daniel@...ll.ch>,
David Airlie <airlied@...il.com>, Helge Deller <deller@....de>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH] drm: Drop select FRAMEBUFFER_CONSOLE for
DRM_FBDEV_EMULATION
On 04/08/23 09:51, Javier Martinez Canillas wrote:
> The commit c242f48433e7 ("drm: Make FB_CORE to be selected if DRM fbdev
> emulation is enabled") changed DRM_FBDEV_EMULATION from 'depends on FB'
> to an effective 'select FB_CORE', so any config that previously had DRM=y
> and FB=n now has FB_CORE=y and FRAMEBUFFER_CONSOLE=y.
>
> This leads to unmet direct dependencies detected for FRAMEBUFFER_CONSOLE
> as reported by Arthur Grillo, e.g:
>
> WARNING: unmet direct dependencies detected for FRAMEBUFFER_CONSOLE
> Depends on [n]: VT [=n] && FB_CORE [=y] && !UML [=y]
> Selected by [y]:
> - DRM_FBDEV_EMULATION [=y] && HAS_IOMEM [=y] && DRM [=y] && !EXPERT [=n]
>
> Arnd Bergmann suggests to drop the select FRAMEBUFFER_CONSOLE for the
> DRM_FBDEV_EMULATION Kconfig symbol, since a possible use case could
> be to enable DRM fbdev emulation but without a framebuffer console.
>
> Fixes: c242f48433e7 ("drm: Make FB_CORE to be selected if DRM fbdev emulation is enabled")
> Reported-by: Arthur Grillo <arthurgrillo@...eup.net>
> Closes: https://lore.kernel.org/dri-devel/20230726220325.278976-1-arthurgrillo@riseup.net
> Suggested-by: Arnd Bergmann <arnd@...db.de>
> Signed-off-by: Javier Martinez Canillas <javierm@...hat.com>
> ---
Greate patch! I was about to send the same one XD.
Reviewed-by: Arthur Grillo <arthurgrillo@...eup.net>
Best Regards,
~Arthur Grillo
>
> drivers/gpu/drm/Kconfig | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> index b51c6a141dfa..2a44b9419d4d 100644
> --- a/drivers/gpu/drm/Kconfig
> +++ b/drivers/gpu/drm/Kconfig
> @@ -135,7 +135,6 @@ config DRM_DEBUG_MODESET_LOCK
> config DRM_FBDEV_EMULATION
> bool "Enable legacy fbdev support for your modesetting driver"
> depends on DRM
> - select FRAMEBUFFER_CONSOLE if !EXPERT
> select FRAMEBUFFER_CONSOLE_DETECT_PRIMARY if FRAMEBUFFER_CONSOLE
> default y
> help
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