Re: [PATCH] soc: imx8m: Fix match data lookup for soc device

[Thorsten Leemhuis]

[+Alexander +Francesco]

On 5/28/26 18:47, Frank Li wrote:
> On Thu, May 28, 2026 at 12:55:34PM +0200, Thorsten Leemhuis wrote:
>> On 5/7/26 17:46, Frank Li wrote:
>>>
>>> On Mon, 27 Apr 2026 09:01:48 +0800, Peng Fan (OSS) wrote:
>>>> The i.MX8M soc device is registered via platform_device_register_simple(),
>>>> so it is not associated with a Device Tree node and the imx8m_soc_driver
>>>> has no of_match_table.
>>>>
>>>> As a result, device_get_match_data() always returns NULL when probing
>>>> the soc device.
>>>>
>>>> [...]
>>>
>>> Applied, thanks!
>>>
>>> [1/1] soc: imx8m: Fix match data lookup for soc device
>>>       commit: 2c6821657ce3b3c85f92719ea81ec9f9ff27df11
>>
>> Just wondering: are you planning to sent this towards mainline this
>> cycle? The regression this fixes was introduced this cycle, so I guess
>> it's something that should be merged before -rc6, as that's when Linus
>> wants all known regression ideally fixed. But from the name of the
>> branch it sounds more like this is scheduled to be merged in the next
>> merge window (but I might easily mistaken there -- if I am: sorry!)
> 
> Thanks reminders. I intent to send for 7.1. But second look, not sure any
> big impact although it is regression.
> 
> commmit message have not show what impact.

Yup, there ideally should have been Link: tags to the problem reports,
as explained by our docs. At least if that patch fixes the problems
linked to below (looks like it, but I'm not totally sure):

> I checked code, look like only
> missed some soc informaiton. Let me know if I am wrong.

Alexander reported problems here:
https://lore.kernel.org/lkml/6593091.DvuYhMxLoT@steina-w/
That mentions a warning and problems with soc_id and serial_number

Francesco jumped in a little later:
https://lore.kernel.org/lkml/20260427064704.GA17710@francesco-nb/
This mentions "CAAM is not working"

Not sure what the impact is, but from the outside it looks a bit like
"better fix this now to ensure those problems never enter a proper release"

Ciao, Thorsten