[PATCH v2 26/32] staging/sm750fb: Initialize fb_ops with fbdev macros

[Greg Kroah-Hartman]

On Mon, Nov 27, 2023 at 02:15:55PM +0100, Thomas Zimmermann wrote:
> Initialize all instances of struct fb_ops with fbdev initializer
> macros for framebuffers in I/O 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: Sudip Mukherjee <sudipm.mukherjee at gmail.com>
> Cc: Teddy Wang <teddy.wang at siliconmotion.com>
> Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
> Cc: linux-staging at lists.linux.dev
> Reviewed-by: Javier Martinez Canillas <javierm at redhat.com>

Acked-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>