linux-kernel - Re: [PATCH] Revert "regulator: qcom-rpmh: Revert "regulator: qcom-rpmh: Use PROBE_FORCE

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Date:   Mon, 15 May 2023 08:05:53 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Amit Pundir <amit.pundir@...aro.org>
Cc:     Bjorn Andersson <andersson@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Caleb Connolly <caleb.connolly@...aro.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Revert "regulator: qcom-rpmh: Revert "regulator:
 qcom-rpmh: Use PROBE_FORCE_SYNCHRONOUS""

Hi,

On Mon, May 15, 2023 at 7:53 AM Amit Pundir <amit.pundir@...aro.org> wrote:
>
> This reverts commit ad44ac082fdff7ee57fe125432f7d9d7cb610a23.
>
> This patch restores the synchronous probing for
> qcom-rpmh-regulator because asynchronous probing broke
> Dragonboard 845c (SDM845) running AOSP. UFSHC fail to
> initialize properly and DB845c fails to boot regardless
> of "rootwait" bootarg being present or not
> https://bugs.linaro.org/show_bug.cgi?id=5975.
>
> Signed-off-by: Amit Pundir <amit.pundir@...aro.org>
> ---
>  drivers/regulator/qcom-rpmh-regulator.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

As mentioned in the other thread [1], I'd rather at least do a little
debugging before jumping to a revert, just so we don't end up having
to do a revert of a revert for the same driver again.

[1] https://lore.kernel.org/r/CAD=FV=VSFDe445WEVTHXxU1WS_HGUV5jR5E8_Vgd4eyhn3rHyA@mail.gmail.com