diff options
Diffstat (limited to 'drivers/usb/core/usb-acpi.c')
| -rw-r--r-- | drivers/usb/core/usb-acpi.c | 34 |
1 files changed, 6 insertions, 28 deletions
diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c index f91ef0220066..d3e7e1b4125e 100644 --- a/drivers/usb/core/usb-acpi.c +++ b/drivers/usb/core/usb-acpi.c @@ -136,8 +136,8 @@ out: static struct acpi_device *usb_acpi_find_companion(struct device *dev) { - int port1; struct usb_device *udev; + struct acpi_device *adev; acpi_handle *parent_handle; /* @@ -155,40 +155,18 @@ static struct acpi_device *usb_acpi_find_companion(struct device *dev) */ if (is_usb_device(dev)) { udev = to_usb_device(dev); - port1 = udev->portnum; - if (udev->parent) { - struct usb_hub *hub; - - hub = usb_hub_to_struct_hub(udev->parent); - /* - * According usb port's connect type to set usb device's - * removability. - */ - switch (hub->ports[port1 - 1]->connect_type) { - case USB_PORT_CONNECT_TYPE_HOT_PLUG: - udev->removable = USB_DEVICE_REMOVABLE; - break; - case USB_PORT_CONNECT_TYPE_HARD_WIRED: - udev->removable = USB_DEVICE_FIXED; - break; - default: - udev->removable = USB_DEVICE_REMOVABLE_UNKNOWN; - break; - } - + if (udev->parent) return NULL; - } - /* root hub's parent is the usb hcd. */ - return acpi_find_child_device(ACPI_COMPANION(dev->parent), - port1, false); + /* root hub is only child (_ADR=0) under its parent, the HC */ + adev = ACPI_COMPANION(dev->parent); + return acpi_find_child_device(adev, 0, false); } else if (is_usb_port(dev)) { struct usb_port *port_dev = to_usb_port(dev); - struct acpi_device *adev = NULL; + int port1 = port_dev->portnum; /* Get the struct usb_device point of port's hub */ udev = to_usb_device(dev->parent->parent); - port1 = port_dev->portnum; /* * The root hub ports' parent is the root hub. The non-root-hub |