From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Linus Torvalds <torvalds@linux-foundation.org>,
Woody Suwalski <terraluna977@gmail.com>,
USB list <linux-usb@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Linux 3.8-rc1 - another regression on USB :-(
Date: Sun, 23 Dec 2012 15:27:48 -0800 [thread overview]
Message-ID: <20121223232748.GA23804@kroah.com> (raw)
In-Reply-To: <CA+55aFwButY7LcOH2XCh1Q8fKi2KQiNS_Caj4O9cHzb4C=TKGw@mail.gmail.com>
On Sun, Dec 23, 2012 at 02:35:49PM -0800, Linus Torvalds wrote:
> Woody,
> Any chance you can bisect this? It's not going to be hugely pleasant
> (with 11k+ commits in between 3.7 and 3.8-rc1 you'll have to compile
> and test at least 14 kernels), but it would help enormously. Of
> course, maybe some USB person can guess what would cause the device to
> go offline..
>
> Added Greg and the linux-usb mailing list to the participants list:
> the images are in the original email on lkml, but there isn't anything
> particularly interesting there, it really just seems to be an
> unexpected and spurious USB disconnect, resulting in "USB disconnect,
> device number 2" followed by "Rejecting I/O to offline device".
I don't see any images on lkml, sorry.
The kernel log for when the disconnect happened would be great to get.
The kernel can't cause a device to disconnect, that's an electrical
thing usually, is this perchance a flaky device/connection? Or has it
always worked on older kernels?
What host controller is being used here (xhci, ehci, etc.?)
thanks,
greg k-h
next prev parent reply other threads:[~2012-12-23 23:24 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-22 2:00 Linux 3.8-rc1 Linus Torvalds
2012-12-22 2:57 ` Steven Rostedt
2013-01-16 9:25 ` David Nyström
2012-12-23 13:39 ` [Regression w/ patch] Media commit causes user space to misbahave (was: Re: Linux 3.8-rc1) Rafael J. Wysocki
2012-12-23 14:08 ` Mauro Carvalho Chehab
2012-12-23 17:36 ` Linus Torvalds
2012-12-23 20:21 ` Mauro Carvalho Chehab
2012-12-23 22:29 ` Linus Torvalds
2012-12-24 19:28 ` Mauro Carvalho Chehab
2012-12-23 20:39 ` Laurent Pinchart
2012-12-23 22:04 ` linux-next stats (Was: " Stephen Rothwell
[not found] ` <50D764BA.1030501@gmail.com>
2012-12-23 22:35 ` Linux 3.8-rc1 - another regression on USB :-( Linus Torvalds
2012-12-23 23:27 ` Greg Kroah-Hartman [this message]
2012-12-24 3:46 ` Woody Suwalski
2012-12-28 23:12 ` Woody Suwalski
2013-01-01 15:17 ` INVALID " Woody Suwalski
2013-01-02 13:41 ` Woody Suwalski
2013-01-12 13:16 ` Andreas Mohr
2013-01-12 16:54 ` Oliver Neukum
2013-01-12 17:38 ` Alan Stern
2013-01-16 4:26 ` Woody Suwalski
2013-01-16 8:25 ` Oliver Neukum
2013-01-16 15:00 ` Alan Stern
2013-01-17 2:25 ` Woody Suwalski
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