diff options
| author | Heikki Krogerus <heikki.krogerus@linux.intel.com> | 2022-08-16 13:16:26 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-09-10 18:22:24 +0200 |
| commit | 6bb057bfd9d509755349cd2a6ca5e5e6e6071304 (patch) | |
| tree | ad234ac1a7152df9fce10c4f00ec3f62ab2a187a | |
| parent | 6d2b5a1cf4dd943909a927133664ad1627783d95 (diff) | |
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: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/acpi/resource.c | 17 | ||||
| -rw-r--r-- | include/linux/acpi.h | 1 |
2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c index e644e90d1884..8032d50ca944 100644 --- a/drivers/acpi/resource.c +++ b/drivers/acpi/resource.c @@ -722,6 +722,23 @@ 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 * @ares: Input ACPI resource object. diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 6f64b2f3dc54..ed4aa395cc49 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -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); |