[PATCH 08/32] auxdisplay/cfag12864bfb: Initialize fb_ops with fbdev macros
Miguel Ojeda
miguel.ojeda.sandonis at gmail.com
Tue Nov 21 23:45:08 UTC 2023
On Wed, Nov 15, 2023 at 11:30 AM Thomas Zimmermann <tzimmermann at suse.de> wrote:
>
> Initialize the instance of struct fb_ops with fbdev initializer
> macros for framebuffers in virtual address space. Set the read/write,
> draw and mmap callbacks to the correct implementation and avoid
> implicit defaults. Also select the necessary helpers in Kconfig.
>
> Fbdev drivers sometimes rely on the callbacks being NULL for a
> default I/O-memory-based implementation to be invoked; hence
> requiring the I/O helpers to be built in any case. Setting all
> callbacks in all drivers explicitly will allow to make the I/O
> helpers optional. This benefits systems that do not use these
> functions.
>
> Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
> Cc: Miguel Ojeda <ojeda at kernel.org>
Acked-by: Miguel Ojeda <ojeda at kernel.org>
Cheers,
Miguel
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