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Date: Thu, 26 Jun 2008 11:52:25 -0400 (EDT) From: Alan Stern <stern@...land.harvard.edu> To: Lukas Hejtmanek <xhejtman@....muni.cz> cc: Greg KH <greg@...ah.com>, Kernel development list <linux-kernel@...r.kernel.org>, USB list <linux-usb@...r.kernel.org> Subject: Re: 2.6.26-rc1 regression since 2.6.25 - problem in 2.6.26-rc8 again On Thu, 26 Jun 2008, Lukas Hejtmanek wrote: > Hello, > > I have another USB problem with Lenovo T61 Thinkpad. > > I'm using kernel 2.6.26-rc8. I do use CONFIG_USB_SUSPEND. > > If I attach USB disk (using EHCI driver), the disk is found and it is working. > If I remove the disk, undock the laptop, dock the laptop again and plug the > disk, the disk is not found at all until I remove and reinsert the EHCI > driver. > > I noticed that if I do not unplug the disk berofe undocking, it works after > docking back. What happens if instead of reloading ehci-hcd, you unplug and replug the disk? What happens if you undock with the disk plugged in, then unplug the disk, then dock the laptop, and then plug in the disk? > any ideas? What does usbmon reveal when you dock the laptop again and then plug in the disk (see Documentation/usb/usbmon.txt)? Can you provide a comparable usbmon log for 2.6.25? Did the problem go away at any time between 2.6.26-rc1 and -rc8? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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