linux-kernel - Re: [PATCH v3] clk: qcom: gdsc: Remove direct runtime PM calls

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Date:   Fri, 04 Nov 2022 12:19:16 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        patches@...ts.linux.dev, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        linux-arm-msm@...r.kernel.org,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Johan Hovold <johan+linaro@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Taniya Das <quic_tdas@...cinc.com>,
        Satya Priya <quic_c_skakit@...cinc.com>,
        Douglas Anderson <dianders@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>
Subject: Re: [PATCH v3] clk: qcom: gdsc: Remove direct runtime PM calls

Quoting Stephen Boyd (2022-11-03 11:30:30)
> We shouldn't be calling runtime PM APIs from within the genpd
> enable/disable path for a couple reasons.
> 
> First, this causes an AA lockdep splat[1] because genpd can call into
> genpd code again while holding the genpd lock.
> 
> WARNING: possible recursive locking detected
> 5.19.0-rc2-lockdep+ #7 Not tainted

Applied to clk-fixes