On Tue, Sep 09, 2014 at 01:36:48PM +0800, Fu, Zhonghui wrote:
> >From 6deb00230f5df68da3ca7490402a0c537bf386bb Mon Sep 17 00:00:00 2001
> From: Fu Zhonghui <zhonghui...@linux.intel.com>
> Date: Tue, 9 Sep 2014 13:02:25 +0800
> Subject: [PATCH] ACPI / platform / LPSS: disable async suspend/resume of LPSS
> devices
>
> LPSS devices must suspend/resume in fixed order. Or some LPSS devices
> will hang during the transition to ACPI_STATE_D0 state.
In addition to the comment from Rafael, I would like to have more
details here why we must suspend/resume the LPSS devices in certain
order.
>
> Signed-off-by: Li Aubrey <aubrey...@linux.intel.com>
> Signed-off-by: Fu Zhonghui <zhonghui...@linux.intel.com>
> ---
> drivers/acpi/acpi_lpss.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
> index fddc1e8..54e5c97 100644
> --- a/drivers/acpi/acpi_lpss.c
> +++ b/drivers/acpi/acpi_lpss.c
> @@ -419,7 +419,7 @@ 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);
> + device_disable_async_suspend(&pdev->dev);
> return 1;
> }
>
> -- 1.7.1
>
> --
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