From 457920817e645a7dee42c2a75c81c5ed8e12ee1c Mon Sep 17 00:00:00 2001
From: Fu Zhonghui <zhonghui.fu@linux.intel.com>
Date: Wed, 24 Sep 2014 22:42:26 +0200
Subject: [PATCH] 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 | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index fddc1e86f9d0e7..b0ea767c86968c 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -419,7 +419,6 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
adev->driver_data = pdata;
pdev = acpi_create_platform_device(adev);
if (!IS_ERR_OR_NULL(pdev)) {
- device_enable_async_suspend(&pdev->dev);
return 1;
}
--
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