Re: [PATCH 5.15 138/230] drm/amdgpu: bind to any 0x1002 PCI diplay class device

Christian König
2022-07-11T10:42:58Z

Am 11.07.22 um 11:37 schrieb Greg Kroah-Hartman:
> On Mon, Jul 11, 2022 at 11:29:53AM +0200, Christian König wrote:
>> Hi Greg & Alex
>>
>> why is that patch picked up for stable? Or are we backporting IP based
>> discovery?
> New device ids are usually added to stable trees as they are "trivial".

Ah! Ok, sounds like a misunderstanding.

For the background this is *not* a new device id, but rather changes the
way the existing device ids are discovered.

Instead of a table with device ids and hard coded list of hw blocks
inside a device, we now look at a VBIOS table to determine which hw
version/blocks are present.

So yes, this might enable new hardware but it's most likely not trivial
enough to be backported.

>> If yes, is that wise? IIRC we had quite a number of typos etc.. in the
>> initial patches.
> If this commit is incorrect, we will be glad to drop it, or add any
> needed add-on commits. Which do you want to see happen here?

Alex, that is mostly a question for you.

Thanks,
Christian.

>
> thanks,
>
> greg k-h