[SRU] [Bionic/Cosmic] [PATCH 0/2] Fix regression on acpi-lpss

Kai-Heng Feng kai.heng.feng at canonical.com
Wed Aug 1 08:17:40 UTC 2018


BugLink: https://bugs.launchpad.net/bugs/1774950

[Impact]
Systems with acpi-lpss can't do S3/S4 on Bionic.

[Test]
Users confirmed these patches work for them.

[Fix]
Commit a192aa923b66a (ACPI / LPSS: Consolidate runtime PM and system
sleep handling) applies quirks for both runtime and system suspend.
This causes problems for some systems, so avoid using quirks on S3 and
S4.

[Regression Potential]
Low. These patches are in upstream stable, and it brings back driver's
old behavior.

Rafael J. Wysocki (2):
  ACPI / LPSS: Avoid PM quirks on suspend and resume from S3
  ACPI / LPSS: Avoid PM quirks on suspend and resume from hibernation

 drivers/acpi/acpi_lpss.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

-- 
2.17.1





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