Backport support for ACPI GPIO interrupts for i2c-hid devices
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
Undecided
|
Phidias | ||
linux (Ubuntu) |
Triaged
|
Medium
|
Phidias | ||
Vivid |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
[Impact]
On some platforms HID over I2C uses GPIO interrupts instead of directly connected to the IO-APIC. Without ACPI GPIO interrupts support, i2c-hid can not find IRQ when probing the device, and shows the following message:
i2c_hid i2c-SYNA7508:00: Could not register for SYNA7508:00 interrupt, irq = -1, ret = -22
i2c_hid: probe of i2c-SYNA7508:00 failed with error -22
So far we've found this issue on some SKL platforms, and one BSW platform.
[Fix]
There's a fix in mainline v4.1-rc1, which add the support for ACPI GPIO interrupts for i2c-hid module.
Commit log is as follows:
commit a485923efbb8305
Author: Mika Westerberg <email address hidden>
Commit: Jiri Kosina <email address hidden>
CommitDate: Tue Feb 24 20:53:30 2015 +0100
HID: i2c-hid: Add support for ACPI GPIO interrupts
[Test]
1. Boot with 4.1-rc1 kernel and patched 3.19 kernel
2. Both touchscreen should work
Related branches
Changed in hwe-next: | |
assignee: | nobody → Phidias (phidias-chiang) |
tags: | added: vivid |
Changed in linux (Ubuntu): | |
assignee: | nobody → Phidias (phidias-chiang) |
Changed in linux (Ubuntu): | |
importance: | Undecided → Medium |
Changed in linux (Ubuntu): | |
status: | Incomplete → New |
status: | New → Triaged |
Changed in linux (Ubuntu Vivid): | |
status: | New → Fix Committed |
tags: |
added: verification-done-vivid removed: verification-needed-vivid |
Changed in hwe-next: | |
status: | New → Fix Released |
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1501187
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.