[PATCH] coresight: fix trace ID search skipping pass-through NoC devices

[Jie Gan]

On 9/2/2026 4:45 PM, Leo Yan wrote:
> On Wed, Sep 02, 2026 at 04:35:11PM +0800, Jie Gan wrote:
> 
> [...]
> 
>> Hi Leo,
>>
>> Thanks for the suggestion.
> 
> You're welcome!
> 
>> I will fix this in the TNOC driver. I agree that there is no need to use
>> additional error codes to report the failure.
>>
>> I will post the new fix patch after below patch[1] to be applied to avoid
>> conflict.
> 
> The patch in the link has no fix tag, but current patch is a simple fix.

I called it as a fix because the TNOC device cannot be probed by the 
AMBA driver unless the PID is manually assigned. This is a hardware 
limitation rather than a driver issue. The problem is resolved by 
switching the device to use a platform driver, so I didnt add a fixes tag.

I will send the simple fix first. Depending on which patch gets applied 
first, I'll respin the other one to avoid conflicts.

Thanks,
Jie

> I'd suggest to give priority this patch - this is friendly for porting
> to stable kernels.
> 
> If there have dependency (based on your local test), you could explictly
> mention the dependency in cover letter and resend the tnoc probe series.
> 
> Thanks,
> Leo
> 
>> [1] https://lore.kernel.org/all/20260710-fix-tracenoc-probe-issue-v6-2-41eb36fef8d9@oss.qualcomm.com/