linux-kernel - Re: [PATCH 0/3] Add x1e Dell Inpsiron 14p

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Message-ID: <b356cbb9-0a7b-49a8-8c2d-8dd3de3f7c2b@linaro.org>
Date: Thu, 24 Apr 2025 16:45:42 +0100
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Rob Clark <robdclark@...il.com>
Cc: Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, linux-arm-msm@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 Rob Clark <robdclark@...omium.org>
Subject: Re: [PATCH 0/3] Add x1e Dell Inpsiron 14p

On 24/04/2025 16:42, Rob Clark wrote:
>> - Bugs
>>    Occasionally when resuming I get a fencing error with hyperlock and
>>    freedreno, TBH it looks like something in the GPU or SMMU according to
>>    Rob Clark:https://pastebin.com/AWjCyaap
> Did you have the same issues on v6.14 or earlier?
> 
> The smmu pm usage count underflow is concerning, the smmu pm should be
> tied to the GPU device via device_link_add().  I've never seen
> something similar, but I'm still on v6.14.
> 
> Could you try reverting commit 0a679336dc17 ("iommu/arm-smmu: Set rpm
> auto_suspend once during probe")
> 
> BR,
> -R

6.15-rc1

I've seen this bug exactly twice. NP to revert but not so sure with only 
a sample set of two, I could say the change fixes.

Anyway, I'll revert and if I see the bug again, we know its not that.

---
bod