On Monday 28 July 2003 03:18, Rob van Nieuwkerk wrote: > On Mon, 28 Jul 2003 01:08:40 +0200 > "Nemosoft Unv." <[EMAIL PROTECTED]> wrote: > > Hi Nemosoft, > > > Attached are two patches, one for 2.4.21 and 2.5.75 for the PWC driver. > > I assume the 2.5.75 patch will go into 2.6.0-test* without problems (I > > hope this driver can make it into the kernel before the 'real' 2.6.0). > > . > . > > > I have two open issues, though: Oliver Neukem pointed out that I should > > resubmit URBs in the 2.5. kernel even in case of USB errors, which I > > did. However, I never got a patch so I'm not 100% if this is the > > solution that he had in mind. > > I don't know if this is related to the "dead camera" problem in 2.4 ?
No; it was a specific problem with 2.5 > (pwc driver dies immediately when IDE disk (or CompactFlash) is accessed > in PIO mode in any 2.4 kernel). Not surprising. PIO is sloooooooooow. It will hog your CPU/PCI bus long enough to give the USB controller a serious constipation problem. > There was a thread a couple of weeks ago on this subject. Several > experiments were done. It is not clear to me if there was a conclusion > on what the cause of this problem is (pwc driver, OHCI, ?). Actually, it might be IDE. Maybe you can play a bit with the PCI latency settings, give the USB controller a higher priority (lower latency) on your PCI bus. - Nemosoft ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
