linux-kernel - Re: [PATCH v2 3/8] phy: qcom-qmp-combo: Extend phy_mutex to all phy

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Message-ID: <ZF4Cnl9n_bntLKf7@hovoldconsulting.com>
Date:   Fri, 12 May 2023 11:10:54 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Bjorn Andersson <quic_bjorande@...cinc.com>
Cc:     Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/8] phy: qcom-qmp-combo: Extend phy_mutex to all
 phy_ops

On Tue, May 09, 2023 at 08:19:25PM -0700, Bjorn Andersson wrote:
> The phy core ensures mutual exclusion across the ops for a given phy,
> but the upcoming introduction of USB Type-C orientation switching might
> race with the DisplayPort phy operations. So extend the mutual exclusion
> to cover the remaining ops as well, to avoid concurrent reconfiguration
> of the hardware.
> 
> Reported-by: Johan Hovold <johan@...nel.org>
> Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>

Reviewed-by: Johan Hovold <johan+linaro@...nel.org>

Johan