On Tue, 25 Dec 2012, Larry Finger wrote: > On 12/25/2012 10:26 AM, Alan Stern wrote: > > On Mon, 24 Dec 2012, Larry Finger wrote: > > > >> The problem has been bisected to commit adfa79d entitled "USB: EHCI: make > >> ehci-pci a separate driver". The symptom is that my NVIDIA controller again > >> reverts to unended logging of messages of the form "hub 2-0:1.0: unable to > >> enumerate USB device on port 5". > > > > A few more details would be helpful, such as the dmesg log (with > > CONFIG_USB_DEBUG enabled). As it is, I don't see how that commit could > > cause this problem. It should not have resulted in any changes in > > behavior -- all it did was split up a driver that was one module into > > two modules. > > > >> This behavior was previously fixed with commit c618759. > > > > That commit affected the ohci-hcd driver, whereas this one affects > > ehci-hcd. They can't possibly be related. > > Alan, > > You are the expert, but I am confident of my bisection. A kernel built from > commit 3e02320 does not have the problem, but commit adfa79d does. > > The dmesg output with CONFIG_USB_DEBUG enabled is posted at > http://susepaste.org/790689. I see. Do you happen to have CONFIG_USB_EHCI_HCD=y and CONFIG_USB_EHCI_PCI=m in your .config? If you do, try changing EHCI_PCI to y. 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
