linux-kernel - Re: [PATCH] HID: Add quirk for Lenovo Yoga 910 with ITE Chips

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Date:   Sun, 16 Jul 2017 09:39:19 +0200
From:   Arek Burdach <arek.burdach@...il.com>
To:     Patrick Pedersen <ctx.xda@...il.com>, jikos@...nel.org
Cc:     benjamin.tissoires@...hat.com, jic23@...nel.org,
        srinivas.pandruvada@...ux.intel.com, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org
Subject: Re: [PATCH] HID: Add quirk for Lenovo Yoga 910 with ITE Chips

Hi Patrick,

On 15.07.2017 14:27, Patrick Pedersen wrote:
> It shall additionally be noted that the i2c-hid 'sleep' bug (present since kernel ver. 4.3)
> still affects the driver. This means that the sensor hub will not report any movement, until
> the device is suspended and resumed.
>
Do you have workaround for that? In my case suspending and resuming 
doesn't help. Sensor reporting is backing to work in unpredictable way. 
What I've tested:

- kernel v4.13-rc1 with your patch applied
- watch -n1 cat /sys/bus/iio/devices/iio\:device*/*_raw <- value not 
changing
- suspend
- resume
- watch -n1 cat /sys/bus/iio/devices/iio\:device*/*_raw <- still not 
changing

If you have some workaround scenario please add it to bug reported be 
me: https://bugzilla.kernel.org/show_bug.cgi?id=195681

Cheers,
Arek