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From: Javier Martinez Canillas <javierm@redhat.com>
To: Arnd Bergmann <arnd@kernel.org>
Cc: "Jani Nikula" <jani.nikula@linux.intel.com>,
	"Daniel Vetter" <daniel@ffwll.ch>,
	"Kees Cook" <keescook@chromium.org>,
	"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
	"Maxime Ripard" <mripard@kernel.org>,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"David Airlie" <airlied@linux.ie>,
	"Arnd Bergmann" <arnd@arndb.de>,
	"Alex Deucher" <alexander.deucher@amd.com>,
	"Christian König" <christian.koenig@amd.com>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] [RESEND] drm: fb_helper: fix CONFIG_FB dependency
Date: Wed, 27 Oct 2021 14:56:28 +0200	[thread overview]
Message-ID: <5a01bedd-9150-b23c-7e2a-08d2e7da0fe6@redhat.com> (raw)
In-Reply-To: <CAK8P3a0_9U0MDLcNG8GL_ZDCGQAsB=G7DBC0k1BYB1HNQTbu4Q@mail.gmail.com>

On 10/27/21 14:52, Arnd Bergmann wrote:

[snip]

>>
>> @@ -104,7 +105,6 @@ config DRM_FBDEV_EMULATION
>>         bool "Enable legacy fbdev support for your modesetting driver"
>>         depends on DRM
>>         depends on FB
>> -       select DRM_KMS_HELPER
>>         select FB_CFB_FILLRECT
>>         select FB_CFB_COPYAREA
>>         select FB_CFB_IMAGEBLIT
> 
> This fails because of all the other drivers that try to 'select DRM_KMS_HELPER'.
> Kconfig will now complain about a symbol that gets selected while its
> dependencies
> are not met.
> 
> To work around that, every single driver that has 'selects DRM_KMS_HELPER' would
> now have to also list 'depends on (DRM_FBDEV_EMULATION && FB) ||
> !DRM_FBDEV_EMULATION'.
>

Ah, I see now. Thanks a lot for the explanation.
 
>        Arnd
> 

Best regards,
-- 
Javier Martinez Canillas
Linux Engineering
Red Hat


  reply	other threads:[~2021-10-27 12:56 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-27 14:28 Arnd Bergmann
2021-09-27 16:23 ` Kees Cook
2021-09-30 14:26   ` Daniel Vetter
2021-10-27 11:47     ` Jani Nikula
2021-10-27 12:13       ` Jani Nikula
2021-10-27 12:18       ` Arnd Bergmann
2021-10-27 12:38         ` Javier Martinez Canillas
2021-10-27 12:52           ` Arnd Bergmann
2021-10-27 12:56             ` Javier Martinez Canillas [this message]
2021-10-27 13:06             ` Jani Nikula
2021-10-27 13:25               ` Arnd Bergmann
2021-10-27 13:36                 ` Javier Martinez Canillas
2021-10-27 12:55           ` Jani Nikula
2021-10-27 13:18             ` Javier Martinez Canillas
2021-10-27 13:05         ` Jani Nikula
2021-10-27 13:19         ` Javier Martinez Canillas
2021-10-28 15:24           ` Daniel Vetter
2021-10-29 12:06             ` Arnd Bergmann

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