On Mon, 10 Feb 2014, Stefani Seibold wrote: > > > I have more information about the bug. I tested with a USB 3.0 > > > Expresscard and this works with 3.13. > > > > > > I also found an old USB 1.1 HUB in my USB gadget box. When i attach the > > > USB flash storage to the USB 1.1 hub there is also no problem. > > > > > > Since the USB 1.1 Hub is attached to the EHCI we can assume that the bug > > > is not in the phy support nor in the USB storage driver. > > > > > > So i thing the bug must be located in the EHCI HC driver. > > > > Yes, it probably is. Can you build 3.13 with CONFIG_USB_DEBUG enabled? > > Maybe some debugging information will show up in the dmesg log and > > provide a clue. > > > > I tried the kernel with CONFIG_USB_DEBUG, but i did not get any USB Debug > after the computer freeze. Did anything show up before the freeze? > After a minute i get the attached output. Sorry i was only able to do screen > shot. It looks like something locked ehci->lock and then never unlocked it. But from the screen shot, I can't tell where this happened. Also, I tried to reproduce this failure on my own computer, using 3.14-rc1, but everything worked correctly. 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
