Re: [PATCH] ACPI: Add _UID support for ACPI devices.

[Zhang Rui <rui.zhang@intel.com>]

On 四, 2012-09-27 at 09:17 +0800, Lv Zheng wrote:
> The _UID object is optional, but is required when the device has no
> other way to report a persistent unique device ID.
> This patch is required for ACPI 5.0 ACPI enumerated IP cores.
> 

> Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

> ---
>  drivers/acpi/scan.c |    5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
> index d730a93..bb7fe47 100644
> --- a/drivers/acpi/scan.c
> +++ b/drivers/acpi/scan.c
> @@ -327,6 +327,8 @@ static void acpi_device_release(struct device *dev)
>  	struct acpi_device *acpi_dev = to_acpi_device(dev);
>  
>  	acpi_free_ids(acpi_dev);
> +	if (acpi_dev->pnp.unique_id)
> +		kfree(acpi_dev->pnp.unique_id);
>  	kfree(acpi_dev);
>  }
>  
> @@ -1162,6 +1164,9 @@ static void acpi_device_set_id(struct acpi_device *device)
>  			device->pnp.bus_address = info->address;
>  			device->flags.bus_address = 1;
>  		}
> +		if (info->valid & ACPI_VALID_UID) {
> +			device->pnp.unique_id = kstrdup(info->unique_id.string, GFP_KERNEL);
> +		}
>  
>  		kfree(info);
>  


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