on 19/05/2011 22:27 Shah, Vishal said the following: > In FreeBSD 8 USB driver, commands are asynchronously sent from umass layer > onto > the wire, in other words, multiple threads are involved before the command is > sent from the umass layer all the way to the wire. Since the usb_proc is not > scheduled current process keeps waiting for the command to complete, hence the > hang. Is this a known issue? If yes, is there a fix available? Are there any > plans of adding a synchronous path to send the command to the device? Any > information regarding this issue is much appreciated.
>From your description this sounds like a problem in USB driver. I am not an expert in USB code, looks like some polling prodding would have to be added there (if it's not there yet). Hans Petter may be a better contact for this issue. I am not sure if I can help you more. -- Andriy Gapon _______________________________________________ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
