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Open Source and information security mailing list archives
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Date: Thu, 25 Feb 2010 11:52:49 -0800 From: Sarah Sharp <sarah.a.sharp@...ux.intel.com> To: Alan Stern <stern@...land.harvard.edu> Cc: Ákos Maróy <akos@...oy.hu>, "Rafael J. Wysocki" <rjw@...k.pl>, Kernel development list <linux-kernel@...r.kernel.org>, Greg KH <gregkh@...e.de>, USB list <linux-usb@...r.kernel.org> Subject: Re: pm_op(): usb_dev_suspend+0x0/0x10 returns -2 on USB device 8087:0020 On Thu, Feb 25, 2010 at 02:36:02PM -0500, Alan Stern wrote: > On Thu, 25 Feb 2010, Sarah Sharp wrote: > > > > > now, I unplug the USB DVD drive: > > > > > > > > Feb 25 17:35:38 tonkachi kernel: [ 276.374282] xhci_hcd 0000:02:00.0: > > > > WARN: transfer error on endpoint > > > > Feb 25 17:35:39 tonkachi kernel: [ 276.728151] xhci_hcd 0000:02:00.0: > > > > WARN: transfer error on endpoint > > > > Feb 25 17:35:39 tonkachi kernel: [ 276.728819] xhci_hcd 0000:02:00.0: > > > > WARN: transfer error on endpoint > > Shouldn't there be some messages here about "USB disconnect"? This > suggests there's something wrong with the root hub. True. I can't tell exactly what's going on without CONFIG_USB_XHCI_HCD_DEBUGGING. It's possible the xHCI host never notified the driver of the disconnect, or there's a bug in the xHCI hub emulation code. Sarah Sharp -- 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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