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Date:   Fri, 13 Oct 2023 07:04:07 +0700
From:   Bagas Sanjaya <bagasdotme@gmail.com>
To:     Loic Poulain <loic.poulain@linaro.org>,
        M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux Regressions <regressions@lists.linux.dev>,
        Linux Networking <netdev@vger.kernel.org>,
        Linux Intel Wireless WAN <linuxwwan@intel.com>,
        "David S. Miller" <davem@davemloft.net>,
        Sergey Ryazanov <ryazanov.s.a@gmail.com>,
        Johannes Berg <johannes@sipsolutions.net>
Subject: Re: Intel 7560 LTE Modem stops working after resuming from standby
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On Thu, Oct 12, 2023 at 06:54:11PM +0200, Loic Poulain wrote:
> Hi Chetan,
>=20
> On Thu, 12 Oct 2023 at 11:52, Bagas Sanjaya <bagasdotme@gmail.com> wrote:
> > I notice a regression report on Bugzilla [1]. Quoting from it:
> >
> > > I noticed a few days ago, after Fedora moved to Kernel 6.5, that my I=
ntel LTE Modem was not working anymore after resuming from standby.
> > >
> > > The journal listed this error message multiple times:
> > > kernel: iosm 0000:01:00.0: msg timeout
> > >
> > > It took me a while to determine the root cause of the problem, since =
the modem did not work either in the following warm reboots.
> > > Only a shutdown revived the modem.
> > >
> > > I did a bisection of the error and I was able to find the culprit:
> > >
> > > [e4f5073d53be6cec0c654fac98372047efb66947] net: wwan: iosm: enable ru=
ntime pm support for 7560
>=20
> Any quick fix for this issue? alternatively we will probably revert e4f50=
73d53.

Chetan can't be contacted as sending to his address bounces (error 550)
(had he left Intel?). Last message on LKML is this culprit patch [1].
Hence, revert for now.

Thanks.

[1]: https://lore.kernel.org/all/1b0829943267c30de27f271666cb7ce897f5b54a.1=
686218573.git.m.chetan.kumar@linux.intel.com/

--=20
An old man doll... just what I always wanted! - Clara

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