linux-kernel - Re: [PATCH] [RFC] qcom_scm: hide Kconfig symbol

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Message-ID: <CAK8P3a1WRBA4mP691fO82ZhYdPhHLGjLH=VhcUxGNeGRMX8knw@mail.gmail.com>
Date:   Mon, 27 Sep 2021 22:47:47 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     John Stultz <john.stultz@...aro.org>,
        Arnd Bergmann <arnd@...db.de>, Rob Clark <robdclark@...il.com>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Alex Elder <elder@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        Andy Gross <agross@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Sudeep Holla <sudeep.holla@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
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Subject: Re: [PATCH] [RFC] qcom_scm: hide Kconfig symbol

On Mon, Sep 27, 2021 at 10:42 PM Bjorn Andersson
<bjorn.andersson@...aro.org> wrote:
> On Mon 27 Sep 13:15 PDT 2021, Arnd Bergmann wrote:
> > On Mon, Sep 27, 2021 at 9:52 PM Bjorn Andersson <bjorn.andersson@...aro.org> wrote:
> >
> > An easier option might be to find a way to build QCOM_SCM without
> > RESET_CONTROLLER for compile testing purposes. I don't know
> > what would break from that.
> >
>
> Afaict the reset API is properly stubbed and RESET_CONTROLLER is a bool,
> so I think we can simply drop the "select" and the kernel will still
> compile fine in all combinations.
>
> When it comes to runtime, we currently select RESET_CONTROLLER from the
> Qualcomm common clocks. If that is dropped (why would it...) it seems
> possible to build a custom kernel for msm8916 that we can boot and miss
> the stubbed out "mss restart" reset line from the SCM.
>
>
> So, let's just drop the select RESET_CONTROLLER from SCM for now.

Ok, I've made that change locally, giving it more time on the randconfig
build box now.

       Arnd