Re: [PATCH RESEND v2 4/5] iommu/tegra-smmu: Rework tegra_smmu_probe_device()

[Nicolin Chen]

Hi Guillaume,

On Thu, Feb 04, 2021 at 11:10:15AM +0000, Guillaume Tucker wrote:
> Hi Nicolin,
> 
> A regression was detected by kernelci.org in IGT's drm_read tests
> on mainline, it was first seen on 17th December 2020.  You can
> find some details here:
> 
>   https://kernelci.org/test/case/id/600b82dc1e3208f123d3dffc/

Thanks for reporting the issue. We did test on Tegra210 and Tegra30
yet not on Tegra124. I am wondering what could go wrong...

> Please let us know if you need any help debugging this issue or
> to try a fix on this platform.

Yes, I don't have any Tegra124 platform to run. It'd be very nice
if you can run some debugging patch (I can provide you) and a fix
after I root cause the issue.

Thanks
Nicolin