On Thursday 12 January 2006 6:21 am, Rene Herman wrote: > David Brownell wrote: > > > I suspect this patch will help some of the folk having issues with > > the EHCI driver not unlinking things correctly, including in > > disconnect paths. Those issues don't happen with all systems. > > > > Let us know if this improves things; the patch should apply to > > most 2.6 kernels, this changes some pretty old code. > > Not sure this was even intented/hoped to do anything about the issue I > was having (async schedule toggling on/off eating PCI bandwidth) but I > saw something about that async schedule, so... > > No changes for me. IDE throughput drop of 8MB/s after turning on > external USB2 drive, throughput not restored by switching off drive > again (disconnect?), only by modprobe -r ehci-hcd.
Darn, I was hoping ... solving that one seems like it may need a PCI analyser. Either there's some bizarre path where the driver is turning that schedule on/off, or the controller itself is doing that. Unless there's a clue somewhere in an email I've not yet read, then I'm out of ideas for that one. - Dave ------------------------------------------------------- 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
