On Fri, 28 Feb 2014, Dan Williams wrote:
> Once usb-acpi has set the port's connect type the usb_device's
> ->removable attribute can be set in the standard location
> set_usb_port_removable().
>
> This also changes behavior in the case where the firmware says that the
> port connect type is unknown. In that case just use the default setting
> determined from the hub descriptor.
>
> Suggested-by: Alan Stern <[email protected]>
> Signed-off-by: Dan Williams <[email protected]>
Good clean-up.
> @@ -155,36 +156,15 @@ 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);
> + port1 = udev->portnum;
> + adev = ACPI_COMPANION(dev->parent);
> + return acpi_find_child_device(adev, port1, false);
Does this entirely make sense? As far as I can see, port1 is never
going to be anything other than 0. After all, root hubs don't have
upstream ports. I don't know what ACPI expects to see here.
Alan Stern
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