On Wednesday 30 March 2005 5:32 pm, Lee Revell wrote: > On Wed, 2005-03-30 at 17:28 -0800, David Brownell wrote: > > On Wednesday 30 March 2005 4:51 pm, Lee Revell wrote: > > > > > > This is the exact configuration of one of the users who reported the > > > problem on LAU. Got a pointer to the patch? And what's the issue with > > > IN transfers? > > > > This is what Greg just posted (and Linus merged into BK, so it'll be > > in BK snapshots starting tomorrow): > > > > http://marc.theaimsgroup.com/?l=linux-usb-devel&m=111221966815043&w=2 > > > > The issue with IN transfers is that microframe scheduling is ... tricky. > > ... > > Thanks for the explanation. I found this patch, and sent the link to > the LAU posters with the problem. > > There are apparently many users affected (some gave up and went back to > 2.4), so there's good opportunity for testing.
Yes. That's why I was particularly glad to see the patches from Karsten; they were the first ones that actually got "it works for me now!!" reports. With luck, all full speed ISO-OUT transfers will now work through EHCI. Even through the funky multi-TT hubs from Cypress. My main question is whether this is also true of the TDI (nee ARC) EHCI silicon that's being embedded in various non-PCI chips. This all seems off-topic for latency though. :) - Dave > > I'd like to see all that split ISO stuff working with EHCI, but someone > > else is going to have to do most of the work. Once it's working we can > > take the CONFIG_EXPERIMENTAL off, which will remove another source of > > errors. :) > > Thanks again for your help, I'll report any interesting results. > > Lee > > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
