[PATCH] sysfb: Fix screen_info type check for VGA

[Javier Martinez Canillas]

Thomas Zimmermann <tzimmermann at suse.de> writes:

> Use the helper screen_info_video_type() to get the framebuffer
> type from struct screen_info. Handle supported values in sorted
> switch statement.
>
> Reading orig_video_isVGA is unreliable. On most systems it is a
> VIDEO_TYPE_ constant. On some systems with VGA it is simply set
> to 1 to signal the presence of a VGA output. See vga_probe() for
> an example. Retrieving the screen_info type with the helper
> screen_info_video_type() detects these cases and returns the
> appropriate VIDEO_TYPE_ constant. For VGA, sysfb creates a device
> named "vga-framebuffer".
>
> The sysfb code has been taken from vga16fb, where it likely didn't
> work correctly either. With this bugfix applied, vga16fb loads for
> compatible vga-framebuffer devices.
>

Reviewed-by: Javier Martinez Canillas <javierm at redhat.com>

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat