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usb/acpi: binding xhci root hub usb port with ACPI

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This patch is to bind xhci root hub usb port with its acpi node.
The port num in the acpi table matches with the sequence in the xhci
extended capabilities table. So call usb_hcd_find_raw_port_number() to
transfer hub port num into raw port number which associates with
the sequence in the xhci extended capabilities table before binding.

Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
This commit is contained in:
Lan Tianyu 2013-03-19 16:48:13 +08:00 committed by Sarah Sharp
parent 3f5eb14135
commit bafcaf6d84
1 changed files with 7 additions and 1 deletions
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8
drivers/usb/core/usb-acpi.c
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@ -15,6 +15,7 @@
#include <linux/kernel.h>
#include <linux/acpi.h>
#include <linux/pci.h>
#include <linux/usb/hcd.h>
#include <acpi/acpi_bus.h>
#include "usb.h"
@ -188,8 +189,13 @@ static int usb_acpi_find_device(struct device *dev, acpi_handle *handle)
* connected to.
*/
if (!udev->parent) {
*handle = acpi_get_child(DEVICE_ACPI_HANDLE(&udev->dev),
struct usb_hcd *hcd = bus_to_hcd(udev->bus);
int raw_port_num;
raw_port_num = usb_hcd_find_raw_port_number(hcd,
port_num);
*handle = acpi_get_child(DEVICE_ACPI_HANDLE(&udev->dev),
raw_port_num);
if (!*handle)
return -ENODEV;
} else {