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Date:	Thu, 15 Mar 2012 18:57:01 +0100
From:	Sebastian Andrzej Siewior <>
To:	Pete Zaitcev <>
Cc:	Greg Kroah-Hartman <>,,
Subject: Re: [PATCH] usb/ub: deprecate & schedule for removal the "Low
 Performance USB Block" driver

On Thu, Mar 15, 2012 at 09:33:31AM -0600, Pete Zaitcev wrote:
> On Wed, 14 Mar 2012 21:52:51 +0100
> Sebastian Andrzej Siewior <> wrote:
> > +What:	Low Performance USB Block driver ("CONFIG_BLK_DEV_UB")
> > +When:	3.6
> > +	does not use libusual which holds various workarounds for
> > +	certain buggy devices.
> Although the above is false, and ub actually started libusual,
> I don't mind. It's a transient notice anyway. Once ub is gone,
> libusual can be folded back into usb-storage.

There might be an miss understanding here. For instance in
drivers/usb/storage/unusual_devs.h we have an entry like:

|UNUSUAL_DEV(  0x03f0, 0x4002, 0x0001, 0x0001,
|                 "HP",
|                 "PhotoSmart R707",

That US_FL_FIX_CAPACITY is used later in scsiglue.c to set sdev->fix_capacity
which is then used by sd_read_capacity() to substract one sector from the
final size.
In ub I see ub_sync_read_cap() and I don't see a change. Was my wording wrong
or is this something else?

> -- Pete

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