On Fri, 23 Apr 2010, Sarah Sharp wrote: > > Does this look okay to you? I don't have any way to test it. > > Yes and no. Everything seems to behave properly with all the USB > devices I have; the I can read and write to the USB 3.0 hard drives, > etc. (The one thing I don't have is a USB 3.0 device that has > descriptors between the SuperSpeed Endpoint Companion Descriptor and the > next Endpoint Descriptor, like a UAS device would have). > > However, some devices are missing from the lsusb output, which is very > strange. Specifically, the roothub is always missing, and any hubs > directly connected to it disappear after a device has been plugged into > them. Hubs further up the tree do not disappear from the lsusb output. > I think this might be related to the fact that the roothub doesn't have > a SuperSpeed Endpoint Companion Descriptor. Very weird indeed. What shows up in /sys/kernel/debug/usb/devices? If that looks all right then maybe the problem is somehow in lsusb. You can find out what lsusb is up to by doing echo 1 >/sys/module/usbcore/parameters/usbfs_snoop before starting the program and then looking at the dmesg log after it runs. > I'm not sure what to make of this, since the patch looks correct to me. > Reverting the patch creates normal lsusb output, so I know the patch > must be the cause of the issue. If /sys/kernel/debug/usb/devices comes out wrong then there's definitely a bug in the patch. But with no USB-3 hardware here, I'll have to ask you to debug it. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
