Hi, 2011/3/30 bradhuang <bradhuang@xxxxxxxxxxxxxx>: > Dears, > > It is in the progress of verification with formal build. So far so good. But > I do not find out the USB 2.0 device that includes interrupt endpoint only > yet. I will try in advance. Maybe you can use a uvc camera to simulate this int-only test by plugging it into hub but not opening the video device. There will have only interrupt urb scheduled and not any iso urb transfers are submitted for the device. Pressing button or other actions may trigger the complete of interrupt urb. thanks, -- Ming Lei -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html