linux-kernel - Re: [regression] external HDD in USB3 enclosure cannot be dynamically removed (Re: Linux 3.7.5)

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Message-ID: <20130213171656.GA9318@citd.de>
Date:	Wed, 13 Feb 2013 18:16:56 +0100
From:	Matthias Schniedermeyer <ms@...d.de>
To:	Holger Hoffstätte 
	<holger.hoffstaette@...glemail.com>
Cc:	Sarah Sharp <sarah.a.sharp@...ux.intel.com>,
	Jonathan Nieder <jrnieder@...il.com>, stable@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	Greg KH <gregkh@...uxfoundation.org>,
	Tilman Schmidt <tilman@...p.cc>
Subject: Re: [regression] external HDD in USB3 enclosure cannot be
 dynamically removed (Re: Linux 3.7.5)

On 13.02.2013 09:28, Holger Hoffstätte wrote:
> On 12.02.2013 21:42, Sarah Sharp wrote:
> > [..]
> > I think I see the issue.  Your host controller reports the Inactive
> > state after a USB disconnect.  My host controllers go to the RxDetect
> > state on a disconnect.
> > 
> > The patches that went into 3.8 and the stable kernels to better handle
> > the Inactive state were not designed to handle a connected device going
> > to the Inactive state.  I thought that would be a rare case, but
> > apparently it's not.
> > 
> > There was a further set of patches queued for 3.9 to deal with connected
> > devices going to the Inactive state, but they looked like they were too
> > big for stable:
> > 
> > d3b9d7a USB: Fix connected device switch to Inactive state.
> > a24a607 USB: Rip out recursive call on warm port reset.
> > 2d4fa94 USB: Prepare for refactoring by adding extra udev checks.
> > 0fe51aa USB: Don't use EHCI port sempahore for USB 3.0 hubs.
> > 
> > Can you retry with Greg's usb-next branch?
> > 
> > git clone git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git -b usb-next
> > 
> > If that fixes your problem, we should either get those additional
> > patches into 3.8 and the stable trees, or do a revert of the whole
> > series and just let 3.9 carry the full patchset.
> 
> Good news! This one does indeed work as expected - the device can be
> removed and is gone for good. Upstream & Stable plz :)

That kernel fixes the problem for me too.




-- 

Matthias
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