linux-kernel - Re: 3.18 regression: Error while assigning device slot ID, USB3 devices not detected

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Message-ID: <20150119133346.GA4490@kroah.com>
Date:	Mon, 19 Jan 2015 21:33:46 +0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Josh Boyer <jwboyer@...oraproject.org>
Cc:	Robert Hancock <hancockrwd@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Linux-usb <linux-usb@...r.kernel.org>
Subject: Re: 3.18 regression: Error while assigning device slot ID, USB3
 devices not detected

On Mon, Jan 19, 2015 at 08:28:19AM -0500, Josh Boyer wrote:
> On Sun, Jan 18, 2015 at 1:25 AM, Greg KH <gregkh@...uxfoundation.org> wrote:
> > On Sun, Jan 18, 2015 at 12:08:18AM -0600, Robert Hancock wrote:
> >> I've got an Intel Haswell-based system with a Gigabyte Z87X-D3H motherboard
> >> under Fedora 21. After updating to the 3.18.2-200 Fedora kernel, I noticed
> >> some errors in dmesg and at least some of my USB3 ports don't recognize any
> >> USB3 devices plugged into them:
> >>
> >> [    0.560838] xhci_hcd 0000:00:14.0: Error while assigning device slot ID
> >> [    0.560912] xhci_hcd 0000:00:14.0: Max number of devices this xHCI host
> >> supports is 32.
> >> [    0.560990] usb usb2-port2: couldn't allocate usb_device
> >> [    0.561098] xhci_hcd 0000:00:14.0: Error while assigning device slot ID
> >> [    0.561163] xhci_hcd 0000:00:14.0: Max number of devices this xHCI host
> >> supports is 32.
> >> [    0.561239] usb usb2-port5: couldn't allocate usb_device
> >> [    0.561344] xhci_hcd 0000:00:14.0: Error while assigning device slot ID
> >> [    0.561409] xhci_hcd 0000:00:14.0: Max number of devices this xHCI host
> >> supports is 32.
> >> [    0.561484] usb usb2-port6: couldn't allocate usb_device
> >>
> >> This worked fine under 3.17. Is this a known problem?
> >
> > Yes it is, should be fixed in Linus's tree now and will be backported to
> > the latest 3.18-stable tree in a week or so.
> 
> Do you happen to know the commit id?

f161ead70fa6a62e432dff6e9dab8e3cfbeabea6
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