Re: [PATCH] [RESEND] drm: fb_helper: fix CONFIG_FB dependency

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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




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