On Tue, May 05, 2009 at 09:00:01PM -0500, Jason Wessel wrote: > The usb_debug driver, when used as the console, will always fail to > insert the carriage return and new line sequence as well as randomly > drop console output. This is a result of only having the single > write_urb and that the tty layer will have a lock that prevents the > processing of the back to back urb requests. > > The solution is to allow more than one urb to be outstanding and have > a slightly deeper transmit queue. The idea and some code is borrowed > from the ftdi_sio usb driver. Almost all usb-serial drivers need this functionality. As you are adding it to the usb_debug driver, why not just add this kind of functionality to the usb-serial core instead, that way we can share it with all of the drivers? I'd much rather see that happen instead of us doing it individually again. thanks, greg k-h -- 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
