linux-kernel - Re: [PATCH v6 01/15] drm/msm/adreno: adreno_gpu: Don't set OPP scaling clock w/ GMU

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Sun, 2 Apr 2023 18:43:57 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Akhil P Oommen <quic_akhilpo@...cinc.com>
Cc:     linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Rob Clark <robdclark@...omium.org>,
        Marijn Suijten <marijn.suijten@...ainline.org>
Subject: Re: [PATCH v6 01/15] drm/msm/adreno: adreno_gpu: Don't set OPP
 scaling clock w/ GMU

On 01/04/2023 14:54, Konrad Dybcio wrote:
> Recently I contributed the switch to OPP API for all Adreno generations.
> I did however also skip over the fact that GPUs with a GMU don't specify
> a core clock of any kind in the GPU node. While that didn't break
> anything, it did introduce unwanted spam in the dmesg:
> 
> adreno 5000000.gpu: error -ENOENT: _opp_set_clknames: Couldn't find clock with name: core_clk
> 
> Guard the entire logic so that it's not used with GMU-equipped GPUs.
> 
> Fixes: 9f251f934012 ("drm/msm/adreno: Use OPP for every GPU generation")
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>   drivers/gpu/drm/msm/adreno/adreno_gpu.c | 24 ++++++++++++++----------
>   1 file changed, 14 insertions(+), 10 deletions(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

-- 
With best wishes
Dmitry