# Re: \[PATCH 4/8\] fbdev/hyperv\_fb: Use fb\_ops helpers for deferred I/O

- From: Javier Martinez Canillas \<javierm@redhat.com\>
- Date: 2023-09-04 13:18:59 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2023/09/8935624
- Thread: https://ratatoskr.run/linux-fbdev/2023/08/8935599/t.md

```text
Thomas Zimmermann [ref] writes:

> Generate callback functions for struct fb_ops with the fbdev macro
> FB_GEN_DEFAULT_DEFERRED_IOMEM_OPS(). Initialize struct fb_ops to
> the generated functions with fbdev initializer macros.
>
> The hyperv_fb driver is incomplete in its handling of deferred I/O
> and damage framebuffers. Write operations do no trigger damage handling.
> Fixing this is beyond the scope of this patch.
>
> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

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

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat

```