linux-kernel - Re: [STABLE REGRESSION] iio: hid-sensor-trigger: Change get poll value function order to avoid sensor properties losing after resume from S3

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Message-ID: <1491353080.3695.4.camel@linux.intel.com>
Date:   Tue, 04 Apr 2017 17:44:40 -0700
From:   Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
To:     rrs@...earchut.com, Song Hongyan <hongyan.song@...el.com>,
        linux-iio <linux-iio@...r.kernel.org>
Cc:     stable@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [STABLE REGRESSION] iio: hid-sensor-trigger: Change get poll
 value function order to avoid sensor properties losing after resume from S3

Hi Ritesh,

Does the attached patch helps?

Thanks,
Srinivas

On Tue, 2017-04-04 at 00:44 +0530, Ritesh Raj Sarraf wrote:
> Adding Stable, LKML and IIO MLs.
> 
> Hello Hongyan,
> 
> Do you have any feedback ? With the bisected commit reverted, I've
> been
> successfully running the machine without any issues.
> 
> Ritesh
> 
> 
> On Sat, 2017-04-01 at 08:14 -0700, Srinivas Pandruvada wrote:
> > Hello Hongyan,
> > 
> > Can you check the findings of Ritesh?
> > 
> > Thanks,
> > Srinivas
> > 
> > On Sat, 2017-04-01 at 14:07 +0530, Ritesh Raj Sarraf wrote:
> > > Hello Srinivas,
> > > 
> > > With the Linux 4.10.7 release, I have encountered a regression
> > > introduced on my
> > > Lenovo Yoga 2 13, for the ITE Rotation Sensor.
> > > 
> > > 
> > > rrs@...rner:~$ lsusb 
> > > Bus 001 Device 002: ID 8087:8000 Intel Corp. 
> > > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> > > Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> > > Bus 002 Device 006: ID 048d:8350 Integrated Technology Express,
> > > Inc. 
> > > Bus 002 Device 005: ID 0bda:b728 Realtek Semiconductor Corp. 
> > > Bus 002 Device 004: ID 04f2:b40f Chicony Electronics Co., Ltd 
> > > Bus 002 Device 003: ID 04f3:0303 Elan Microelectronics Corp. 
> > > Bus 002 Device 002: ID 0bda:0129 Realtek Semiconductor Corp.
> > > RTS5129
> > > Card Reader
> > > Controller
> > > Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> > > 2017-04-01 / 14:04:49 ♒♒♒  ☺  
> > > 
> > > 
> > > The ITE sensors do not feed any data on the 4.10.7 kernel.
> > > Reverting
> > > back to
> > > 4.10.5, everything works back.
> > > 
> > > 
> > > After a git bisect, the culprit reported is:
> > > 
> > > Bisecting: 0 revisions left to test after this (roughly 0 steps)
> > > [6c2aab07d12436af1cd8d9ac1d117a442cc91eec] iio: hid-sensor-
> > > trigger:
> > > Change get
> > > poll value function order to avoid sensor properties losing after
> > > resume from S3
> > > 1
> > > 
> > > Can you please review my findings to confirm that it really is a
> > > regression bug
> > > ?
> > > 
> > > 
> > > Thanks,
> > > Ritesh
> > > 
View attachment "0001-iio-hid-sensor-Store-restore-poll-and-hysteresis.patch" of type "text/x-patch" (3892 bytes)