Hi, Trying to workaround the aiptek graphic tablet driver I fund a strange thing in usb core. On message.c usb_internal_control_msg return negative status on error and positive value on ok. usb_internal_control_msg call usb_start_wait_urb. In usb_start_wait_urb when timeout occur return status is set to status = urb->status and length to urb->actual_length. But in my workaround timeout occur and urb->status is 0. So return status is 0 and in usb_internal_control_msg no error is detected, so length are returned (no even 0).
I'm not familiar with kernel source, I'm wrong or there is some thing bad ? Fred.
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