From a33ec399e9fc266ba20f9b71d693aa63658bf2aa Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 3 Mar 2013 23:05:29 +0100 Subject: ACPI / scan: Introduce common code for ACPI-based device hotplug Multiple drivers handling hotplug-capable ACPI device nodes install notify handlers covering the same types of events in a very similar way. Moreover, those handlers are installed in separate namespace walks, although that really should be done during namespace scans carried out by acpi_bus_scan(). This leads to substantial code duplication, unnecessary overhead and behavior that is hard to follow. For this reason, introduce common code in drivers/acpi/scan.c for handling hotplug-related notification and carrying out device insertion and eject operations in a generic fashion, such that it may be used by all of the relevant drivers in the future. To cover the existing differences between those drivers introduce struct acpi_hotplug_profile for representing collections of hotplug settings associated with different ACPI scan handlers that can be used by the drivers to make the common code reflect their current behavior. Signed-off-by: Rafael J. Wysocki Acked-by: Toshi Kani Tested-by: Toshi Kani --- include/acpi/acpi_bus.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/acpi/acpi_bus.h') diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index e65278f560c4..f2c1d08a4798 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -88,11 +88,23 @@ struct acpi_device; * ----------------- */ +enum acpi_hotplug_mode { + AHM_GENERIC = 0, + AHM_CONTAINER, + AHM_COUNT +}; + +struct acpi_hotplug_profile { + bool enabled:1; + enum acpi_hotplug_mode mode; +}; + struct acpi_scan_handler { const struct acpi_device_id *ids; struct list_head list_node; int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id); void (*detach)(struct acpi_device *dev); + struct acpi_hotplug_profile hotplug; }; /* -- cgit v1.2.3