Re: [PATCH v3] power: reset: use restart_notifier mechanism for msm-poweroff

From: Josh Cartwright
Date: Tue Sep 23 2014 - 14:01:34 EST


On Tue, Sep 23, 2014 at 12:48:42PM -0500, Kumar Gala wrote:
>
> On Sep 23, 2014, at 1:28 AM, Pramod Gurav <pramod.gurav@xxxxxxxxxxxxxxx> wrote:
>
> > +linux-arm-msm
> > On Tuesday 23 September 2014 11:38 AM, Pramod Gurav wrote:
> >> This change replaces use of arm_pm_restart with recently introduced
> >> reset mechanism in Linux kernel called restart_notifier.
>
> Can you update the commit message to include details about the priority level we are setting it to.
>
> Probably something like Josh had:
>
> Choose priority 128, as according to documentation, this mechanism "is
> sufficient to restart the entire system?.
>
> Hmm, what happens if we have ps_hold restart and msm-poweroff enabled.
> Which one should have priority?

I would hope we would avoid a situation where both this driver is
probed, and the pinctrl-msm driver has registered a restart handler?

That is, we wouldn't ever mix the pinctrl-msm ps_hold mechanism (for
MSM8660/MSM8960/APQ8064, etc) and msm-poweroff (APQ8074 and later). Is
this a case you're worried about?

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