Hello. Alan Stern wrote:
Seen during boot the last few days on my laptop:
running 3.0.0-rc4-mmotm0622: Jul 2 13:08:37 turing-police kernel: [ 2.788108] hub 2-0:1.0: over-current condition on port 1 Jul 2 13:08:37 turing-police kernel: [ 2.990088] hub 2-0:1.0: over-current condition on port 2 Jul 2 13:08:37 turing-police kernel: [ 3.193073] hub 6-0:1.0: over-current condition on port 1 Jul 2 13:08:37 turing-police kernel: [ 3.395088] hub 6-0:1.0: over-current condition on port 2
running 3.0.0-rc5-mmotm0630: Jul 5 09:43:36 turing-police kernel: [ 203.686082] hub 6-0:1.0: over-current condition on port 1 Jul 5 09:43:36 turing-police kernel: [ 203.969179] hub 6-0:1.0: over-current condition on port 2 Jul 5 09:43:36 turing-police kernel: [ 204.217077] hub 6-0:1.0: over-current condition on port 1
The problem? I don't see any devices that would *cause* the condition:
The device 5 and 6 on bus 1 are attached to the docking station, the Jul 2 boot was undocked and those two devices weren't present. Nobody home on bus 2 or 6 at any time, as far as I can tell.
Any ideas?
That message was added recently, which may explain why you haven't seen it before.
Wasn't there a similar dev_err() message before that patch that added this message (the previous message was printed on any over-current signal change)?
For more debugging, please collect a usbmon log for bus 2 or bus 6 (see Documentation/usb/usbmon.txt). In fact, you might try doing this for an earlier kernel as well.
It may be that your host controllers claim that an over-current condition exists when it really doesn't, or it may be that those ports are wired incorrectly and really do have an over-current condition.
If it's EHCI driver, there's module option to suppress over-current checking, called 'ignore_oc'. It should help with bogus over-current signalling...
Alan Stern
WBR, Sergei -- 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
