linux-kernel - Re: [PATCH] Revert "i2c: core: support bus regulator controlling in adapter"

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Message-ID: <CAJMQK-jx+z974AT_p+-AVAbMQQ33V-XU9NKmy-i6nbS5zagHBA@mail.gmail.com>
Date:   Sat, 5 Feb 2022 02:18:18 +0800
From:   Hsin-Yi Wang <hsinyi@...omium.org>
To:     "Tareque Md.Hanif" <tarequemd.hanif@...oo.com>
Cc:     Wolfram Sang <wsa@...nel.org>,
        "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "amd-gfx@...ts.freedesktop.org" <amd-gfx@...ts.freedesktop.org>,
        Bibby Hsieh <bibby.hsieh@...iatek.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Matthias Brugger <matthias.bgg@...il.com>
Subject: Re: [PATCH] Revert "i2c: core: support bus regulator controlling in adapter"

On Sun, Jan 16, 2022 at 2:44 AM Tareque Md.Hanif
<tarequemd.hanif@...oo.com> wrote:
>
> Hi Hsin-Yi,
>
> The issue still exists. I reverted a19f75de73c220b4496d2aefb7a605dd032f7c01 (the commit that reverted 5a7b95fb993ec399c8a685552aa6a8fc995c40bd) and manually applied the patch (tags/v5.16). journalctl attached.

hi Tareque,

Can you apply the same setting[1] again and with this patch to see if
the issue is still there?
https://github.com/torvalds/linux/commit/6dc8265f9803ccb7e5da804e01601f0c14f270e0

[1] reverted a19f75de73c220b4496d2aefb7a605dd032f7c01 (the commit that
reverted 5a7b95fb993ec399c8a685552aa6a8fc995c40bd) and manually
applied the patch (tags/v5.16)

Thanks
>
> Regards,
>
> Tareque
>
> On Saturday, January 15, 2022, 11:27:07 PM GMT+6, Hsin-Yi Wang <hsinyi@...omium.org> wrote:
>
>
> hi Tareque,
>
>
> On Fri, Jan 14, 2022 at 6:09 PM Tareque Md Hanif
> <tarequemd.hanif@...oo.com> wrote:
> >
> > Hi Hsin-Yi,
> >
> > On 1/12/22 16:58, Hsin-Yi Wang wrote:
> >
> > Can you help provide logs if we apply
> > 5a7b95fb993ec399c8a685552aa6a8fc995c40bd but revert
> > 8d35a2596164c1c9d34d4656fd42b445cd1e247f?
> >
> > Issue still exists. journalctl log attached in revert_8d.txt
> >
> >
> > > after apply 5a7b95fb993ec399c8a685552aa6a8fc995c40bd
> > > 1. delete SET_LATE_SYSTEM_SLEEP_PM_OPS(i2c_suspend_late,
> > > i2c_resume_early) and function i2c_suspend_late() and
> > > i2c_resume_early().
> >
> > No issues. journalctl log attached in test1.txt
> >
> >
> > > 2. delete SET_RUNTIME_PM_OPS(i2c_runtime_suspend, i2c_runtime_resume,
> > > NULL) and function i2c_runtime_suspend() and i2c_runtime_resume().
> >
> > Issue exists. journalctl log attached in test2.txt
>
>
> Thanks for the testing.
> Can you help us test if applying the following patch on top of
> 5a7b95fb993ec399c8a685552aa6a8fc995c40bd works? Thanks
>
> diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
> index 9eb4009cb250..6b046012aa08 100644
> --- a/drivers/i2c/i2c-core-base.c
> +++ b/drivers/i2c/i2c-core-base.c
> @@ -484,7 +484,7 @@ static int i2c_resume_early(struct device *dev)
>         struct i2c_client *client = i2c_verify_client(dev);
>         int err;
>
> -      if (!client)
> +      if (!client || dev_pm_skip_resume(dev))
>                 return 0;
>
>         if (pm_runtime_status_suspended(&client->dev) &&
> @@ -502,7 +502,7 @@ static int i2c_suspend_late(struct device *dev)
>         struct i2c_client *client = i2c_verify_client(dev);
>         int err;
>
> -      if (!client)
> +      if (!client || dev_pm_skip_suspend(dev))
>                 return 0;
>
>         err = pm_generic_suspend_late(&client->dev);
>