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

On 9/2/2026 4:45 PM, Leo Yan wrote:

On Wed, Sep 02, 2026 at 04:35:11PM +0800, Jie Gan wrote:

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Hi Leo,

Thanks for the suggestion.

You're welcome!

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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

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[1] https://lore.kernel.org/all/20260710-fix-tracenoc-probe-issue-v6-2-41eb36fef8d9@oss.qualcomm.com/ (local)