linux-kernel - Re: [Stable-review] [25/29] USB: fix usbstorage for 2770:915d delivers no FAT

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Date:	Sat, 23 Jan 2010 02:43:46 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Greg KH <gregkh@...e.de>
Cc:	stern@...land.harvard.edu, linux-kernel@...r.kernel.org,
	stable@...nel.org, Rohan Hart <rohan.hart17@...il.com>,
	Ryan May <rmay31@...il.com>, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org, stable-review@...nel.org,
	alan@...rguk.ukuu.org.uk
Subject: Re: [Stable-review] [25/29] USB: fix usbstorage for 2770:915d
 delivers no FAT

On Fri, 2010-01-22 at 16:10 -0800, Greg KH wrote:
> 2.6.32-stable review patch.  If anyone has any objections, please let us know.
> 
> ------------------
> 
> From: Ryan May <rmay31@...il.com>
> 
> commit 10d2cdb6102669279bee2d9a00a22431b74583d5 upstream.
> 
> Resolves kernel.org bug 14914.
> 
> Remove entry for 2770:915d (usb digital camera with mass storage
> support) from unusual_devs.h. The fix triggered by the entry causes
> the file system on the camera to be completely inaccessible (no
> partition table, the device is not mountable).
> 
> The patch works, but let me clarify a few things about it.  All the
> patch does is remove the entry for this device from the
> drivers/usb/storage/unusual_devs.h, which is supposed to help with a
> problem with the device's reported size (I think).  I'm pretty sure it
> was originally added for a reason, so I'm not sure removing it won't
> cause other problems to reappear.  Also, I should note that this
> unusual_devs.h entry was present (and activating workarounds) in
> 2.6.29, but in that version everything works fine.  Starting with
> 2.6.30, things no longer work.
[...]

It doesn't sound like this bug or fix are sufficiently well understood
yet to be suitable for a stable update.  The bug report is currently
marked as invalid!

Ben.

-- 
Ben Hutchings
Any smoothly functioning technology is indistinguishable from a rigged demo.

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