Public bug reported:
[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
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Phidias (phidias-chiang)
Status: Incomplete
** Tags: vivid
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1535513
Title:
Enable suspend function for i2c-hid device in Vivid
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1535513/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
