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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-03-03 22:35:20 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-03-04 14:23:40 +0100 |
| commit | 53540098b23c3884b4a0b4f220b9d977bc496af3 (patch) | |
| tree | fe86061c4772efaa92fbe68920f803ae4280b2d0 /include/acpi | |
| parent | ACPI / porocessor: Beautify code, pr->id is u32 which is never < 0 (diff) | |
| download | linux-53540098b23c3884b4a0b4f220b9d977bc496af3.tar.xz linux-53540098b23c3884b4a0b4f220b9d977bc496af3.zip | |
ACPI / glue: Add .match() callback to struct acpi_bus_type
USB uses the .find_bridge() callback from struct acpi_bus_type
incorrectly, because as a result of the way it is used by USB every
device in the system that doesn't have a bus type or parent is
passed to usb_acpi_find_device() for inspection.
What USB actually needs, though, is to call usb_acpi_find_device()
for USB ports that don't have a bus type defined, but have
usb_port_device_type as their device type, as well as for USB
devices.
To fix that replace the struct bus_type pointer in struct
acpi_bus_type used for matching devices to specific subsystems
with a .match() callback to be used for this purpose and update
the users of struct acpi_bus_type, including USB, accordingly.
Define the .match() callback routine for USB, usb_acpi_bus_match(),
in such a way that it will cover both USB devices and USB ports
and remove the now redundant .find_bridge() callback pointer from
usb_acpi_bus.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/acpi_bus.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index e65278f560c4..c751d7de3a5f 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -437,7 +437,8 @@ void acpi_remove_dir(struct acpi_device *); */ struct acpi_bus_type { struct list_head list; - struct bus_type *bus; + const char *name; + bool (*match)(struct device *dev); /* For general devices under the bus */ int (*find_device) (struct device *, acpi_handle *); /* For bridges, such as PCI root bridge, IDE controller */ |