ACPI / platform / LPSS: disable async suspend/resume of LPSS devices
authorFu Zhonghui <zhonghui.fu@linux.intel.com>
Wed, 24 Sep 2014 20:42:26 +0000 (22:42 +0200)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Wed, 24 Sep 2014 20:42:26 +0000 (22:42 +0200)
commit457920817e645a7dee42c2a75c81c5ed8e12ee1c
tree3d08864673e2885ae3c6d59fb8eff35b1a4ac832
parent0f33be009b89d2268e94194dc4fd01a7851b6d51
ACPI / platform / LPSS: disable async suspend/resume of LPSS devices

On some systems (Asus T100 in particular) there are strict ordering
dependencies between LPSS devices with respect to power management
that break if they suspend/resume asynchronously.

In theory it should be possible to follow those dependencies in the
async suspend/resume case too (the ACPI tables tell as that the
dependencies are there), but since we're missing infrastructure
for that at the moment, disable async suspend/resume for all of
the LPSS devices for the time being.

Link: http://marc.info/?l=linux-acpi&m=141158962321905&w=2
Fixes: 8ce62f85a81f (ACPI / platform / LPSS: Enable async suspend/resume of LPSS devices)
Signed-off-by: Li Aubrey <aubrey.li@linux.intel.com>
Signed-off-by: Fu Zhonghui <zhonghui.fu@linux.intel.com>
Cc: 3.16+ <stable@vger.kernel.org> # 3.16+
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/acpi/acpi_lpss.c