Re: [PATCH 1/6] ACPI/EC: Introduce STARTED/STOPPED flags to replace BLOCKED flag.

From: Kirill A. Shutemov
Date: Thu Nov 20 2014 - 16:35:00 EST


On Thu, Nov 20, 2014 at 02:34:12AM +0000, Zheng, Lv wrote:
> Hi,
>
> > From: Kirill A. Shutemov [mailto:kirill@xxxxxxxxxxxxx]
> > Sent: Wednesday, November 19, 2014 8:16 PM
> >
> > On Tue, Nov 18, 2014 at 10:20:11PM +0100, Rafael J. Wysocki wrote:
> > > On Tuesday, November 18, 2014 03:23:28 PM Kirill A. Shutemov wrote:
> > > > On Wed, Nov 05, 2014 at 02:52:36AM +0000, Zheng, Lv wrote:
> > >
> > > [cut]
> > >
> > > >
> > > > Here's lockdep warning I see on -next:
> > >
> > > Is patch [1/6] sufficient to trigger this or do you need all [1-4/6]?
> >
> > I only saw it on -next. I've tried to apply patches directly on -rc5 and
> > don't see the warning. I don't have time for proper bisecting, sorry.
>
> Also I want to know if there is a real dead lock issue triggered?

I didn't see system hung or something. The laptop is usable at least.

> I think we have worked the dead lock issue around to make it working even when the fix is not merged so that we can have other EC work proceeded.
> So maybe I only need to prevent the warning from being triggered at current situation.
>
> Thanks and best regards
> -Lv
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--
Kirill A. Shutemov
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