On 12 Dec 2006, Mattias Rönnblom wrote: > Hi again, > > what was suppose to have been a tidy bug report was less so when cut > in half by the less-than-perfect computer operator. Anyways, this is > was the previous message was to suppose to have been (sorry for the > confusion): > > I'm running kernel 2.6.16 on an Intel IXP420 network processor (XScale > ARM, big endian mode) with a Philips ISP 1563BM EHCI/OHCI Host > Controller connected to its PCI bus. The issue I having is in about > one out of ten boots, the unit fails to detect or use a USB Mass > Storage device connected to the HC. Two things happen: > > a) The EHCI HC fails to read the device descriptor with "read/64, > error -71" (see log below for details). > b) The device is detected, but fails later with various SCSI errors, > and the device is reset w/o any success (see log for details). > > When you've booted in a "bad" mode you, whatever Mass Storage devices > connected to suffers either case a) or b). (I have not tried > connecting non-Mass Storage USB devices to any of the two ports on the > failing HC.) > > If you've had a "good" boot, the devices work as expected. They mount > OK, you can plug in and unplug the devices many times w/o problems. > I've also tried several long running file copy tests, and everything > seem to be working smoothly. > > The 2.6.16 is a clean kernel.org kernel except for some integration > patches (IRQ mapping etc). I've also tried with the heavily modified > Montavista Pro 4.1 2.6.10 kernel, with similar experience (in this > regard). > > I've tested with several different USB Mass Storage devices, and with > both High and Full Speed devices, with the same result. > > The issue can appear after both warm and cold boots. > > Are there any known issues with the ISP 1563 chip and the Linux USB > drivers?
For the USB drivers, no. I don't know about the ISP 1563 driver. As far as I know, these sorts of errors reflect low-level hardware incompatibilities or noise in the USB cables. Alan Stern ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
