linux-kernel - Re: [PATCH 3/4] phy: qualcomm: phy-qcom-eusb2-repeater: Zero out untouched tuning regs

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Message-ID: <4c6877c9-97ad-4092-86a3-f9b314f131ef@linaro.org>
Date:   Thu, 31 Aug 2023 17:11:05 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Abel Vesa <abel.vesa@...aro.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] phy: qualcomm: phy-qcom-eusb2-repeater: Zero out
 untouched tuning regs

On 30.08.2023 04:40, Konrad Dybcio wrote:
> The vendor kernel zeroes out all tuning data outside the init sequence
> as part of initialization. Follow suit to avoid UB.
This patch doesn't do what it says. It passes 0x0 as val and mask
to regmap_update_bits resulting in a NOP, still..

Konrad