dino99, while you are 100% correct in Vivid expiring soon (Feb. 2016),
the 3.19.x series enablement kernel for Trusty has a little bit more
life left in that it expires in Aug. 2016.
Hence, I don't see the problem with this going forward as is, given the
fix commits are already identified, and it's not being pursued on a high
priority basis.
** Tags added: cherry-pick
** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
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https://bugs.launchpad.net/bugs/1535513
Title:
Enable suspend function for i2c-hid device in Vivid
Status in HWE Next:
New
Status in linux package in Ubuntu:
Triaged
Bug description:
[Impact]
On some platforms the touchpad relies on pinctrl devices to provide GPIO
interrupt, but in 3.19.0 pinctrl-cherryview doesn't support suspend well and
will lose the config after suspend/resume, then touchpad can't be used.
Also, there is a racing condition in i2c-hid module which makes
touchpad unusable when waking up.
[Fix]
This fix has two parts. First part is to enable the suspend/resume function
in pinctrl-cherryview:
commit 9eb457b547cc731bc2fc251bd79891a60c64fc3e
Refs: [HEAD]
Author: Mika Westerberg <mika.westerb...@linux.intel.com>
Date: Thu Dec 4 12:32:50 2014 +0200
pinctrl: cherryview: Save and restore pin configs over system
sleep
The second part is to eliminate the racing condition in i2c-hid:
commit 9a327405014f4ef4cdad67a0686db82b9f23c62c
Author: Mika Westerberg <mika.westerb...@linux.intel.com>
Date: Mon Dec 21 15:26:31 2015 +0200
HID: i2c-hid: Prevent sending reports from racing with device
reset
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