# Re: \[PATCH v2 8/9\] hyperv: avoid dependency on screen\_info

- From: Javier Martinez Canillas \<javierm@redhat.com\>
- Date: 2023-07-19 14:26:29 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2023/07/2271089
- Thread: https://ratatoskr.run/linux-fbdev/2023/07/2270948/t.md

```text
Arnd Bergmann [ref] writes:

> From: Arnd Bergmann <arnd@arndb.de>
>
> The two hyperv framebuffer drivers (hyperv_fb or hyperv_drm_drv) access the
> global screen_info in order to take over from the sysfb framebuffer, which
> in turn could be handled by simplefb, simpledrm or efifb. Similarly, the
> vmbus_drv code marks the original EFI framebuffer as reserved, but this
> is not required if there is no sysfb.
>
> As a preparation for making screen_info itself more local to the sysfb
> helper code, add a compile-time conditional in all three files that relate
> to hyperv fb and just skip this code if there is no sysfb that needs to
> be unregistered.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---

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

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat

```