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Commit aca0a4eb authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

ACPI / scan: .match() callback for ACPI scan handlers 



Introduce a .match() callback for ACPI scan handlers to allow them to
use more elaborate matching algorithms if necessary.  That is needed
for the upcoming PNP scan handler in particular.

This change is based on a Zhang Rui's prototype.

Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
parent 52d1d0b1

drivers/acpi/scan.c

+3 −0
Original line number Diff line number Diff line
@@ -1977,6 +1977,9 @@ static bool acpi_scan_handler_matching(struct acpi_scan_handler *handler, 
{

	const struct acpi_device_id *devid;



	if (handler->match)

		return handler->match(idstr, matchid);



	for (devid = handler->ids; devid->id[0]; devid++)

		if (!strcmp((char *)devid->id, idstr)) {

			if (matchid)

include/acpi/acpi_bus.h

+1 −0
Original line number Diff line number Diff line
@@ -131,6 +131,7 @@ static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile( 
struct acpi_scan_handler {

	const struct acpi_device_id *ids;

	struct list_head list_node;

	bool (*match)(char *idstr, const struct acpi_device_id **matchid);

	int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);

	void (*detach)(struct acpi_device *dev);

	void (*bind)(struct device *phys_dev);