linux-kernel - Re: [PATCH] Input: cros_ec_keyb: Remove check before calling pm_wakeup

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Date:   Mon, 6 Aug 2018 16:05:46 -0700
From:   Ravi Chandra Sadineni <ravisadineni@...omium.org>
To:     Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Ravi Chandra Sadineni <ravisadineni@...gle.com>,
        Todd Broch <tbroch@...gle.com>, linux-kernel@...r.kernel.org,
        linux-input@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH] Input: cros_ec_keyb: Remove check before calling pm_wakeup_event.

Hi Merek,

Thanks for the info. Lemme understand what's going on. Will update the
thread once I have more info.

Thanks,
Ravi
On Mon, Aug 6, 2018 at 12:15 AM Marek Szyprowski
<m.szyprowski@...sung.com> wrote:
>
> Hi Dmitry
>
> On 2018-08-06 08:16, Dmitry Torokhov wrote:
> > On Sun, Aug 5, 2018 at 10:29 PM Marek Szyprowski
> > <m.szyprowski@...sung.com> wrote:
> >> Hi Ravi,
> >>
> >> On 2018-08-03 18:53, Ravi Chandra Sadineni wrote:
> >>> Understood. I am trying to reproduce this issue locally. Wanted to
> >>> know the version of the kernel so I can give a try. Marek, can you
> >>> please confirm the kernel version.
> >>>
> >> Yes, sorry for the missing context, I was in hurry writing the report and
> >> I wanted to send it before leaving the office. I'm testing mainline on Snow
> >> with exynos_defconfig.
> >>
> >> Suspend/resume is partially broken already with mainline, but if you disable
> >> CPUfreq support, it works fine on Linux v4.17.
> >>
> >> I've posted CPUfreq related fixes here if you are interested:
> >> https://patchwork.kernel.org/patch/10554607/
> >> https://patchwork.kernel.org/patch/10554603/
> >>
> >> The issue with cros_ec_keyb patch appears first on Linux v4.18-rc1, which is
> >> the first release with that patch.
> > Marek, this patch should only be in -next, I do not believe I sent it
> > to Linus just yet. If mainline is broken for you it can't be caused by
> > this patch.
>
> Aaahh. My fault then. The suspend/resume issue is cause by commit
> 38ba34a43dbc ("Input: cros_ec_keyb - mark cros_ec_keyb driver as wake
> enabled device."), which has been merged to v4.18-rc1.
>
> It looks that I've downloaded wrong patch from the patchwork to reply it
> with a a bug report. :( I'm really sorry for the noise in the wrong thread.
>
> Ravi: please let me know how can I help you to debug this issue.
>
> >
> >> Linux -next from 20180803, which has a few
> >> more patches for cros_ec_keyb suffers from the same issue.
> > Just to confirm, if you revert only this patch from -next you get
> > suspend/resume back?
> >
> > Thanks.
>
> Best regards
> --
> Marek Szyprowski, PhD
> Samsung R&D Institute Poland
>