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[Phidias <phidias.chiang@xxxxxxxxxxxxx>]

** Description changed:

  [Impact]
  
  As title, after upgrading to latest Vivid kernel the touchscreen failed.
  After bisecting shows this revert cause the regression:
  
  commit 95df597989f6f297db63dd8669656d10f5f48eb1
  Author: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
  Date: Fri Dec 4 23:49:18 2015 +0200
  
-     Revert "ACPI / LPSS: allow to use specific PM domain during
+     Revert "ACPI / LPSS: allow to use specific PM domain during
  ->probe()"
  
  [Fix]
  
  The reverted patch has had a revised version upstreamed:
  
  commit de16d55206c5ce82ad44590b01718fbe2323853c
  Author: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
  Date:   Fri Dec 4 23:49:19 2015 +0200
  
-     ACPI / LPSS: allow to use specific PM domain during ->probe()
+     ACPI / LPSS: allow to use specific PM domain during ->probe()
  
  For Vivid it's a simple clean pick (plus a one line change for header
- file), but in Xenial the touchscreen still works because the original
- patch is not reverted. I'll firstly revert the patch than apply the new
- fix.
+ file).
+ 
+ For Xenial the touchscreen still works because the original patch is not
+ reverted, and with the patch reverted the I2C touchscreen still works
+ fine, so I'll skip Xenial for this patch.
  
  [Test]
  
  3.19.0-56 -> Failed
  3.19.0-56 + patches -> OK (Including suspend)
  4.4.0-15 -> OK
- 4.4.0-15 + revert patch -> To Be Tested
- 4.4.0-15 + patches -> To Be Tested
+ 4.4.0-15 + revert patch -> OK
+ 4.4.0-15 + patches -> N/A

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https://bugs.launchpad.net/bugs/1562778

Title:
  I2C touchscreen init failed on HP X360

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Triaged

Bug description:
  [Impact]

  As title, after upgrading to latest Vivid kernel the touchscreen
  failed. After bisecting shows this revert cause the regression:

  commit 95df597989f6f297db63dd8669656d10f5f48eb1
  Author: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
  Date: Fri Dec 4 23:49:18 2015 +0200

      Revert "ACPI / LPSS: allow to use specific PM domain during
  ->probe()"

  [Fix]

  The reverted patch has had a revised version upstreamed:

  commit de16d55206c5ce82ad44590b01718fbe2323853c
  Author: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
  Date:   Fri Dec 4 23:49:19 2015 +0200

      ACPI / LPSS: allow to use specific PM domain during ->probe()

  For Vivid it's a simple clean pick (plus a one line change for header
  file).

  For Xenial the touchscreen still works because the original patch is
  not reverted, and with the patch reverted the I2C touchscreen still
  works fine, so I'll skip Xenial for this patch.

  [Test]

  3.19.0-56 -> Failed
  3.19.0-56 + patches -> OK (Including suspend)
  4.4.0-15 -> OK
  4.4.0-15 + revert patch -> OK
  4.4.0-15 + patches -> N/A

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