于 2012/8/13 23:52, Alan Stern 写道:
On Mon, 13 Aug 2012, Lan, Tianyu wrote:
Hi all:
I am trying to implement patch of setting DeviceRemovable according ACPI information.
The DeviceRemovable is set in hcd driver *_hub_descriptor(e.g ehci_hub_descriptor()). But these
functions just have struct usb_hcd or hcd specific struct(e.g struct xhci_hcd) and struct usb_hub_descriptor
point as parameter. There is no way to get the root hub's struct usb_device which can be used to find
ports'device and then get ports' acpi handle and information. A bridge between usb_hcd and root hub's
usb_device is needed. I have a proposal of add root hub's struct usb_device point into the struct usb_hcd.
Does this make sense or is there other solutions? Thanks.
hcd->bus.root_hub.
hi Alan:
Thanks for your reminder. Another question is that some hcds'(e.g xhci)
DeviceRemovable have
been set. They may be conflict with acpi information. How should we deal with
the conflict?
Alan Stern
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