linux-kernel - Re: [PATCH v3] drm/msm/dpu: Disallow unallocated resources to be returned

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Message-Id: <167400670542.1683873.15043456378376951686.b4-ty@linaro.org>
Date:   Wed, 18 Jan 2023 04:06:19 +0200
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     phone-devel@...r.kernel.org,
        Marijn Suijten <marijn.suijten@...ainline.org>
Cc:     ~postmarketos/upstreaming@...ts.sr.ht,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Martin Botka <martin.botka@...ainline.org>,
        Jami Kettunen <jami.kettunen@...ainline.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>,
        Stephen Boyd <swboyd@...omium.org>,
        Vinod Koul <vkoul@...nel.org>,
        Drew Davenport <ddavenport@...omium.org>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] drm/msm/dpu: Disallow unallocated resources to be returned


On Tue, 10 Jan 2023 00:15:55 +0100, Marijn Suijten wrote:
> In the event that the topology requests resources that have not been
> created by the system (because they are typically not represented in
> dpu_mdss_cfg ^1), the resource(s) in global_state (in this case DSC
> blocks, until their allocation/assignment is being sanity-checked in
> "drm/msm/dpu: Reject topologies for which no DSC blocks are available")
> remain NULL but will still be returned out of
> dpu_rm_get_assigned_resources, where the caller expects to get an array
> containing num_blks valid pointers (but instead gets these NULLs).
> 
> [...]

Applied, thanks!

[1/1] drm/msm/dpu: Disallow unallocated resources to be returned
      https://gitlab.freedesktop.org/lumag/msm/-/commit/abc40122d9a6

Best regards,
-- 
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>