well... i am getting usb.c complaining about "bulk_msg: timeout"
and i traced it down to the chip level where SL811 is getting NACK from the slave (device)... and because of that... the urb->complete is not getting called... and usb task is then spitting out that timeout message is this a non-issue and i am looking for the wrong problem??? thanks Greg KH wrote: > > On Thu, Jan 16, 2003 at 01:58:39PM -0500, thomas chen wrote: > > i am working on a SL811 host controller in a ARM7 based embeded system > > running uclinux > > > > i am continusouly getting NACK from slave device after a while... > > Nothing wrong with that, it means the device doesn't have any data to > send to the host. > > > can someone point me to a good resource about the low level usb > > handshaking??? > > The USB spec at www.usb.org is the best place for this. I've heard > there's a Mindspring USB book, but haven't had a chance to look at it. > Others say it is also a good reference. > > thanks, > > greg k-h ------------------------------------------------------- This SF.NET email is sponsored by: Thawte.com Understand how to protect your customers personal information by implementing SSL on your Apache Web Server. Click here to get our FREE Thawte Apache Guide: http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0029en _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
