*/
#include <linux/acpi.h>
+#include <linux/bits.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include "internal.h"
+/* Exclude devices that have no _CRS resources provided */
+#define ACPI_ALLOW_WO_RESOURCES BIT(0)
+
static const struct acpi_device_id forbidden_id_list[] = {
{"ACPI0009", 0}, /* IOxAPIC */
{"ACPI000A", 0}, /* IOAPIC */
{"PNP0000", 0}, /* PIC */
{"PNP0100", 0}, /* Timer */
{"PNP0200", 0}, /* AT DMA Controller */
- {"SMB0001", 0}, /* ACPI SMBUS virtual device */
+ {"SMB0001", ACPI_ALLOW_WO_RESOURCES}, /* ACPI SMBUS virtual device */
{ }
};
dest->parent = pci_find_resource(to_pci_dev(parent), dest);
}
+static unsigned int acpi_platform_resource_count(struct acpi_resource *ares, void *data)
+{
+ bool *has_resources = data;
+
+ *has_resources = true;
+
+ return AE_CTRL_TERMINATE;
+}
+
/**
* acpi_create_platform_device - Create platform device for ACPI device node
* @adev: ACPI device node to create a platform device for.
struct acpi_device *parent = acpi_dev_parent(adev);
struct platform_device *pdev = NULL;
struct platform_device_info pdevinfo;
+ const struct acpi_device_id *match;
struct resource_entry *rentry;
struct list_head resource_list;
struct resource *resources = NULL;
if (adev->physical_node_count)
return NULL;
- if (!acpi_match_device_ids(adev, forbidden_id_list))
- return ERR_PTR(-EINVAL);
+ match = acpi_match_acpi_device(forbidden_id_list, adev);
+ if (match) {
+ if (match->driver_data & ACPI_ALLOW_WO_RESOURCES) {
+ bool has_resources = false;
+
+ acpi_walk_resources(adev->handle, METHOD_NAME__CRS,
+ acpi_platform_resource_count, &has_resources);
+ if (has_resources)
+ return ERR_PTR(-EINVAL);
+ } else {
+ return ERR_PTR(-EINVAL);
+ }
+ }
INIT_LIST_HEAD(&resource_list);
count = acpi_dev_get_resources(adev, &resource_list, NULL, NULL);