> No, a urb callback handler is running in interrupt context, sorry. > > What problem are you trying to solve by doing this? I started to write firmware for the USBRSA. As a test, I am copying everything that is sent to an OUT endpoint to an IN endpoint. At the driver side, I would like to issue a read transfer right after the driver completed a write transfer. I will do this write function of the driver then. Tilman -- 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