> -----Original Message----- > From: linux-usb-owner@xxxxxxxxxxxxxxx [mailto:linux-usb- > owner@xxxxxxxxxxxxxxx] On Behalf Of matthieu castet > Sent: Wednesday, March 31, 2010 2:22 PM > To: linux-usb@xxxxxxxxxxxxxxx > Subject: ehci-hang on 2.6.32 > > Hi, > > > since some kernels, high speed usb hang after some random time. > > Here [1] is a trace of the hang with debug enabled for ehci. > > When the hang occurs a device is disconnected, and then enumerated again. > The enumeration fails and fallback to full-speed. > If new device are plugged, high speed enumeration fails and fallback to > full-speed. > If I remember, on a working HS enumeration on ehci, the Port status continues to be sig=se0 PE CONNECT A transition to PEC CSC is not normal ehci_hcd 0000:00:10.3: GetStatus port 6 status 00100a POWER sig=se0 PEC CSC CSC -> Change in current status... maybe some kind of current change condition !! > > Any idea what could cause the failure ? > Failing hardware ? > <snip> -- 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
