Commit 45792081 authored by Fu Zhonghui's avatar Fu Zhonghui Committed by Rafael J. Wysocki

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: 8ce62f85 (ACPI / platform / LPSS: Enable async suspend/resume of LPSS devices)
Signed-off-by: default avatarLi Aubrey <aubrey.li@linux.intel.com>
Signed-off-by: default avatarFu Zhonghui <zhonghui.fu@linux.intel.com>
Cc: 3.16+ <stable@vger.kernel.org> # 3.16+
[ rjw: Changelog ]
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 0f33be00
...@@ -419,7 +419,6 @@ static int acpi_lpss_create_device(struct acpi_device *adev, ...@@ -419,7 +419,6 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
adev->driver_data = pdata; adev->driver_data = pdata;
pdev = acpi_create_platform_device(adev); pdev = acpi_create_platform_device(adev);
if (!IS_ERR_OR_NULL(pdev)) { if (!IS_ERR_OR_NULL(pdev)) {
device_enable_async_suspend(&pdev->dev);
return 1; return 1;
} }
......
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