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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-03-03 22:35:20 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-03-04 14:23:40 +0100
commit53540098b23c3884b4a0b4f220b9d977bc496af3 (patch)
treefe86061c4772efaa92fbe68920f803ae4280b2d0 /drivers/ata
parent9b27516fcd7ab7dc416edf418446c24c61729938 (diff)
downloadvexpress-lsk-53540098b23c3884b4a0b4f220b9d977bc496af3.tar.gz
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 'drivers/ata')
-rw-r--r--drivers/ata/libata-acpi.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 0ea1018280b..c832a5ca09a 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -1150,6 +1150,7 @@ static int ata_acpi_find_dummy(struct device *dev, acpi_handle *handle)
}
static struct acpi_bus_type ata_acpi_bus = {
+ .name = "ATA",
.find_bridge = ata_acpi_find_dummy,
.find_device = ata_acpi_find_device,
};