Hello. On 16-04-2013 13:08, Hans de Goede wrote:
When usbfs
USBFS support has been removed some months ago. Maybe you meant 'usbdevfs'?..
receives a ctrl-request from userspace it calls check_ctrlrecip, which for a request with USB_RECIP_ENDPOINT tries to map this to an interface to see if this interface is claimed, except for ctrl-requests with a type of USB_TYPE_VENDOR.
When trying to use this device: http://www.akaipro.com/eiepro redirected to a Windows vm running on qemu on top of Linux.
The windows driver makes a ctrl-req with USB_TYPE_CLASS and USB_RECIP_ENDPOINT with index 0, and the mapping of the endpoint (0) to the interface fails since ep 0 is the ctrl endpoint and thus never is part of an interface.
This patch fixes this ctrl-req failing by skipping the checkintf call for USB_RECIP_ENDPOINT ctrl-reqs on the ctrl endpoint.
Reported-by: Dave Stikkolorum <[email protected]> Tested-by: Dave Stikkolorum <[email protected]> Signed-off-by: Hans de Goede <[email protected]>
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