Commit 6bb057bf authored by Heikki Krogerus's avatar Heikki Krogerus Committed by Rafael J. Wysocki
Browse files

ACPI: resource: Add helper function acpi_dev_get_memory_resources() 



Wrapper function that finds all memory type resources by
using acpi_dev_get_resources(). It removes the need for the
drivers to check the resource data type separately.

Signed-off-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 6d2b5a1c

drivers/acpi/resource.c

+17 −0
Original line number Diff line number Diff line
@@ -721,6 +721,23 @@ int acpi_dev_get_dma_resources(struct acpi_device *adev, struct list_head *list) 
}

EXPORT_SYMBOL_GPL(acpi_dev_get_dma_resources);



/**

 * acpi_dev_get_memory_resources - Get current memory resources of a device.

 * @adev: ACPI device node to get the resources for.

 * @list: Head of the resultant list of resources (must be empty).

 *

 * This is a helper function that locates all memory type resources of @adev

 * with acpi_dev_get_resources().

 *

 * The number of resources in the output list is returned on success, an error

 * code reflecting the error condition is returned otherwise.

 */

int acpi_dev_get_memory_resources(struct acpi_device *adev, struct list_head *list)

{

	return acpi_dev_get_resources(adev, list, is_memory, NULL);

}

EXPORT_SYMBOL_GPL(acpi_dev_get_memory_resources);



/**

 * acpi_dev_filter_resource_type - Filter ACPI resource according to resource

 *				   types

include/linux/acpi.h

+1 −0
Original line number Diff line number Diff line
@@ -506,6 +506,7 @@ int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list, 
			   void *preproc_data);

int acpi_dev_get_dma_resources(struct acpi_device *adev,

			       struct list_head *list);

int acpi_dev_get_memory_resources(struct acpi_device *adev, struct list_head *list);

int acpi_dev_filter_resource_type(struct acpi_resource *ares,

				  unsigned long types);