[PATCH] Revert "drm/ast: Zero is missing in detect function"

[Kim Phillips]

On 10/15/21 2:25 AM, Thomas Zimmermann wrote:
> Commit 572994bf18ff ("drm/ast: Zero is missing in detect function")
> prevents some systems from booting. Seen on Supermicro Super
> Server/X10SRL-F, BIOS 3.3 10/28/2020 . There's further a bug that
> results in
> 
>    KASAN: use-after-free in enqueue_timer+0x4f/0x1e0
> 
> which is also triggered by commit
> 572994bf18ff ("drm/ast: Zero is missing in detect function").

That last statement is technically wrong.  Like I said, in my
case [1], the bad commit is commit aae74ff9caa8 ("drm/ast:
Add detect function support")

Please revert aae74ff9caa8.

Thanks,

Kim

[1] https://www.spinics.net/lists/dri-devel/msg318039.html