On Thu, 14 Feb 2002, Matthew Fredrickson wrote: | On Thu, 14 Feb 2002, Georg Acher wrote: | | > On Wed, Feb 13, 2002 at 05:33:13PM -0600, Matthew Fredrickson wrote: | > | > > More data: IIRC, on the vanilla uhci.c driver, ISOC sucks. Sucks really | > > badly. Kind of funny though, 'cause I was helping somebody with writing a | > > driver for something that used BULK transfers, and the usb-uhci driver | > > kept on Oops!'ing his system (dereferencing a NULL pointer in the host | > > controller code) whenever he tried to initiate his transfer. Switching to | > | > Were there bug reports for this? Does it still happen? | > | > > the uhci.c driver corrected this. Go Figure. So both drivers are | > > good/bad at different things, though the usb-uhci driver seems to | > > perform/behave better for most cases I've seen. | > | > Just as a side note: We use ISO streaming for our DABUSB-device, which needs | > about 384KB/s. It works reliably for _months_, but only with Intel chipsets. | > VIA chipsets produce errors (corrupted packets) every few hours. | > | | Oh, this could be the problems that I've seen. I've only had access to | VIA based UHCI controllers. Maybe I'll see if I can go hunt up some other | UHCI controllers and see what happens...
The only places that I have ever seen UHCI controllers are from VIA (standalone or integrated chipsets) or Intel chipsets. Did you mean that you'll try a system with an Intel chipset? The other option is to find one of manh OHCI controllers available. -- ~Randy _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
