On Fri, 2005-12-30 at 14:13 -0500, Dan Streetman wrote: > On Thu, 29 Dec 2005, Lee Revell wrote: > > >How do I test them? Should this make USB audio work with > >CONFIG_USB_BANDWIDTH? > > It won't have any effect on CONFIG_USB_BANDWIDTH, as the EHCI transaction > translator scheudling code doesn't care about that config setting. This > also won't have any effect on USB 2.0 devices (e.g. a highspeed Audio > device). > > The updates will only help in the situation where there are multiple > lowpseed or fullspeed devices with periodic endpoints, all connected to > the same USB 2.0 (highspeed) hub. In that situation it's possible to > "fill up" the USB 2.0 hub's transaction translator periodic schedule with > only a few devices. The updates allow many more devices to fit in the > TT's periodic schedule. The specific number of devices depends on how > many periodic endpoints, those endpoint's poll rates, and their max packet > sizes. >
OK. For some reason I though that problem was fixed, I guess it was a different issue. ALSA users previously reported that a full speed audio device didn't work at all through a high speed hub at all but that it was fixed a few months ago. Lee ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
