This patch adds another usb-storage subdriver, which supports two fairly
old dual-XD/SmartMedia reader-writers (USB1.1 devices).

This driver was written by Daniel Drake <dsd@gentoo.org> -- he notes
that he wrote this driver without specs, however a vendor-supplied GPL
driver for the previous generation of products ("sma03") did prove to be
quite useful, as did the sddr09 driver which also has to deal with
low-level physical block layout on SmartMedia.

The original patch has been reformed by me, as it clashed with the
libusual patches.

We really need to consolidate some of this common SmartMedia code, and
get together with the MTD guys to share it with them as well.
Signed-off-by: NDaniel Drake <dsd@gentoo.org>
Signed-off-by: NMatthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This is the third of three patches to prepare the sddr09 subdriver for
conversion to the Sim-SCSI framework.  This patch (as596) moves the
computation of the LBA to the start of the read/write routines, so that
addresses completely beyond the end of the device can be detected and
reported differently from transfers that are partially within the
device's capacity.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Acked-by: NAndries Brouwer <Andries.Brouwer@cwi.nl>
Signed-off-by: NMatthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This is the second of three patches to prepare the sddr09 subdriver for
conversion to the Sim-SCSI framework.  This patch (as595) updates the
code to use standard error values for return codes instead of our
special-purpose USB_STOR_TRANSPORT_... codes.  The reverse update is
then needed in the transport routine, but with the Sim-SCSI framework
that routine will go away.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Acked-by: NAndries Brouwer <Andries.Brouwer@cwi.nl>
Signed-off-by: NMatthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This is the first of three patches to prepare the sddr09 subdriver for
conversion to the Sim-SCSI framework.  This patch (as594) straightens
out the initialization procedures and headers:

	Some ugly code from usb.c was moved into sddr09.c.

	Set-up of the private data structures was moved into the
	initialization routine.

	The connection between the "dpcm" version and the standalone
	version was clarified.

	A private declaration was moved from a header file into the
	subdriver's .c file.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Acked-by: NAndries Brouwer <Andries.Brouwer@cwi.nl>
Signed-off-by: NMatthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

The OneTouch subdriver submits its own interrupt URB for notifications
about button presses.  Consequently it needs to know about suspend and
resume events, so it can cancel or restart the URB.

This patch (as593) adds a hook to struct us_data, to be used for
notifying subdrivers about Power Management events, and it implements
the hook in the OneTouch driver.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NNick Sillik <n.sillik@temple.edu>
Signed-off-by: NMatthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch adds an unusual_devs.h entry for NIKON Coolpix 2000 camera
wich cause error: "Not Ready: Medium not present"
Works fine with th patched kernel...

Here are the informations in /proc/bus/usb/devices:

T:  Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  2 Spd=12  MxCh= 0
D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=04b0 ProdID=0301 Rev= 0.10
S:  Manufacturer=NIKON
S:  Product=NIKON DSC E2000
C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=  0mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=08(stor.) Sub=06 Prot=50
Driver=usb-storage
E:  Ad=01(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=83(I) Atr=03(Int.) MxPS=   8 Ivl=16ms
Signed-off-by: NFabien COSSE <fabien.cosse@wanadoo.fr>
Signed-off-by: NPhil Dibowitz <phil@ipom.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

patch below marks various USB tables and variables as const so that they
end up in .rodata section and don't cacheline share with things that get
written to. For the non-array variables it also allows gcc to optimize
more.
Signed-off-by: NArjan van de Ven <arjan@infradead.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

It is no longer needed, so let's remove it, saving a bit of memory.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Make the bias parameter writeable. Writing the parameter does not trigger
a rebind of currently attached storage devices.
Signed-off-by: NPete Zaitcev <zaitcev@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch adds a shim driver libusual, which routes devices between
usb-storage and ub according to the common table, based on unusual_devs.h.
The help and example syntax is in Kconfig.
Signed-off-by: NPete Zaitcev <zaitcev@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

When the usb-storage module forces sdev->scsi_level to SCSI_2, it should
also force starget->scsi_level to the same value.  Otherwise, the SCSI
layer may attempt to issue SCSI-3 commands to the device, such as REPORT
LUNS, which it cannot handle.  This can prevent the device from working
with Linux.

The AMS Venus DS3 DS2316SU2S SATA-to-SATA+USB enclosure, based on the
Oxford Semiconductor OXU921S chip, requires this patch to function
correctly on Linux.  The enclosure reports a SCSI-3 SPC-2 command set
level, but does not correctly handle the REPORT LUNS SCSI command -
probably due to a bug in its firmware.

It seems likely that other USB storage enclosures with similar bugs will
also benefit from this patch.

Tony Lindgren <tony@atomide.com> collaborated in the development of this
patch.
Signed-off-by: NPaul Walmsley <paul@booyaka.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

On Wed, Nov 16, 2005 at 06:34:24PM -0800, Pete Zaitcev wrote:
>On Wed, 16 Nov 2005 23:52:32 +0100, David Hrdeman <david@2gen.com> wrote:
>> usb-storage: waiting for device to settle before scanning
>>   Vendor: I0MEGA    Model: UMni1GB*IOM2K4    Rev: 1.01
>>   Type:   Direct-Access                      ANSI SCSI revision: 02
>> SCSI device sda: 2048000 512-byte hdwr sectors (1049 MB)
>> sda: Write Protect is off
>> sda: Mode Sense: 00 00 00 00
>> sda: assuming drive cache: write through
>> ioctl_internal_command: <8 0 0 0> return code = 8000002
>>    : Current: sense key=0x0
>>     ASC=0x0 ASCQ=0x0
>> SCSI device sda: 2048000 512-byte hdwr sectors (1049 MB)
>
>I think it's harmless. I saw things like that, and initially I plugged
>them with workarounds like this:

Thanks for the pointer, and yes, it is harmless, but it floods the
console with the messages which hides other (potentially important)
messages...following your example I've made a patch which fixes the
problem.
Signed-off-by: NDavid Hrdeman <david@2gen.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This small patch adds a device ID used by older Maxtor OneTouch drives
(the ones with blue face-plate instead of the fancy silver one used in
newer models). The button on those drives works well with the current
driver.

From: Antti Andreimann <Antti.Andreimann@mail.ee>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Peter Favrholdt reported that his Kodak flash device was getting
detected as a CDROM, and he helped me track this down to the fact that
the device takes a long time (approx 440ms!) to reset.

This patch increases the delay to 500ms, which solves the problem.
Signed-off-by: NDaniel Drake <dsd@gentoo.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The onetouch support doesn't suspend correctly (leaves an interrupt
URB posted, instead of unlinking it) so for now just disable it
when PM is in the air.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

I actually have this device, and kernel reports blacklist entry is no
longer neccessary.
Signed-off-by: NPavel Machek <pavel@suse.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Freecom seems to be one of those vendors that can't get the GET CAPACITY
thing right. This expands the US_FL_FIX_CAPACITY flag for the entire
range of their fccd product line.

This is based on a patch sent by Stuart Black
<stuart_black@yahoo.co.uk>.
Signed-off-by: NPhil Dibowitz <phil@ipom.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch is originally from Alan Stern (as569).  It has been rediffed
against a current tree.

This patch converts usb-storage to use the kthread API for creating its
control and scanning threads.  The new code doesn't use kthread_stop
because the threads need (or will need in the future) to exit
asynchronously.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NMatthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch from Alan Stern started as as568.  It has been rediffed against
a current tree.

This patch adds minimal suspend/resume support to usb-storage.  Just enough
for it to qualify as PM-aware.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NMatthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch is from Alan Stern (as560).  It has been rediffed against a
current tree.

This patch allocates a separate buffer for usb-storage to use when
auto-sensing.  Up to now we have been using the sense buffer embedded in a
scsi_cmnd struct, which is dangerous on hosts that (a) don't do
cache-coherent DMA or (b) have DMA alignment restrictions.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NMatthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch is originally from Alan Stern (as557).  It has been re-diffed
against a current tree, and I also corrected a minor merging error.

Some time ago we introduced a delay before device scanning, because many
devices do not like to receive SCSI commands right after enumeration.
Now it turns out there's a device that doesn't like to receive
Get-Max-LUN right after enumeration either.  Accordingly this patch
delays the Get-Max-LUN request until the beginning of the scanning
procedure.  This fixes Bugzilla entry #5010.

Three things are worth noting.  First, I removed the locking code from
usb_stor_acquire_resources.  It's not needed, because the locking is to
protect against disconnect events and acquire_resources is only called
during probe (so the disconnect routine can't be called).  Second, I
initialized to 0 the buffer used for the Get-Max-LUN response.  It's not
really necessary, but it will prevent random values from showing up in
the debugging log when the request fails.  Third, I added a test against
the SINGLE_LUN flag.  This will allow us to use the flag to indicate
Bulk-only devices that can't handle Get-Max-LUN.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NMatthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

On Tue, 18 Oct 2005, Simeon Simeonov wrote:
> Attached is a patch that solves mounting problems for
> LEICA D-LUX camera with FC4 2.6.13 kernel.
>
> Let me know if you have some questions.

Looks okay to me.  Given that the previous entry uses the full 0000 -
9999 range, I guess this one can also.  The vendor name is a little odd
(it will give us three different vendor names all in entries with the
same vendor ID) but that doesn't really matter either.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NPhil Dibowitz <phil@ipom.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This adds US_FL_FIX_CAPACITY for yet _another_ entire block of Apple
productIds. They really can't seem to get this right. This one is for
the iPod Nano. Reported by Tyson Vinson <lornoss@gmail.com>.
Signed-off-by: NPhil Dibowitz <phil@ipom.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

 drivers/usb/storage/unusual_devs.h |   10 ++++++++++
 1 file changed, 10 insertions(+)

This patch adds the US_FL_IGNORE_RESIDUE flag for the TrekStor i.Beat
Joy 2.0. Original version of this patch was sent by Stefan Werner
<dustbln@gmx.de> with test/rediff/etc. by me.
Signed-off-by: NPhil Dibowitz <phil@ipom.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

 drivers/usb/storage/unusual_devs.h |    7 +++++++
 1 file changed, 7 insertions(+)

Just noticed that the SDDR-05b entry is missing for the shuttle_usbat driver.
Looking through BK history it was removed in this patch:

http://linux.bkbits.net:8080/linux-2.6/gnupatch@42435730FZQ2XCA6Qv5GPGD4pC4laQ

However, at merge time, it looks like the duplicate was already removed,
compare these two revisions:

http://linux.bkbits.net:8080/linux-2.6/anno/drivers/usb/storage/unusual_devs.h@1.152
http://linux.bkbits.net:8080/linux-2.6/anno/drivers/usb/storage/unusual_devs.h@1.153Signed-off-by: NDaniel Drake <dsd@gentoo.org>
Signed-off-by: NPhil Dibowitz <phil@ipom.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

 drivers/usb/storage/unusual_devs.h |    8 ++++++++
 1 file changed, 8 insertions(+)

A while ago, Matthew Dharm wrote:
> Looks good.  Tho, I would like to see a future patch to do two things:
> 	1) Change comments from C++ style to C-style
> 	2) Make sure we're naming consistently everywhere SCM, USBAT,
> 	USBAT-02 (most noticably needing fixing is the string used at
> 	transport-selection time, but a sweep of all uses to be consistent
> 	would be in order).

Sorry for the long delay, here is a patch to address this. I also clarified
some ATA/ATAPI wording + function names.
Signed-off-by: NDaniel Drake <dsd@gentoo.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

 drivers/usb/storage/shuttle_usbat.c |  306 ++++++++++++++++++++----------------
 drivers/usb/storage/shuttle_usbat.h |   66 +++----
 drivers/usb/storage/transport.h     |    2
 drivers/usb/storage/unusual_devs.h  |   10 -
 drivers/usb/storage/usb.c           |    4
 5 files changed, 213 insertions(+), 175 deletions(-)

There appears to be one more case where the HP8200 CD writer devices are
detected as flash readers - when the USB cable is replugged after use, with
the power cable still connected.

Oddly enough, the identify device command appears to 'fall through' when the
devices are in this state, the status register reading exactly the same opcode
as the command (0xA1) that was just executed.

I think it's safe to label this behaviour as specific to HP8200 devices, I
can't get the flash devices to respond like this.

This patch should solve the last of the HP8200 issues which have cropped up
recently.
Signed-off-by: NDaniel Drake <dsd@gentoo.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

 drivers/usb/storage/shuttle_usbat.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

the following patch splits the NOTE: in the Device Drivers->USB submenu of
Kconfig thus making the whole of it readable on 600x800 terminals.
(Otherwise, the line was too big and disappeared into nowhere.)
Signed-off-by: NBorislav Petkov <petkov@uni-muenster.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

 drivers/usb/storage/Kconfig |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Input: convert onetouch to dynamic input_dev allocation

This is required for input_dev sysfs integration
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Alan Stern wrote:
> If the device sometimes reports the correct values, then you should
> include NEED_OVERRIDE flag to prevent messages about unnecessary
> overrides showing up in the system log.  Also, if bInterfaceSubclass
> is correct and only bInterfaceProtocol is wrong, then the entry should
> say US_SC_DEVICE instead of US_SC_SCSI.

Fair points, thanks.

When connected over USB2, this device reports a nonsense
bInterfaceProtocol value 6 and doesn't work with usb-storage.  When
connected over USB1, the device reports the correct bInterfaceProtocol
value 0x50 (bulk) and works with no problems.
Signed-off-by: NDaniel Drake <dsd@gentoo.org>
Signed-off-by: NPhil Dibowitz <phil@ipom.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch adds entries for several USB floppies that need
the US_FL_SINGLE_LUN flag. These were reported by
Sebastian Kapfer <sebastian_kapfer@gmx.net> and Olaf Hering
<olh@suse.de>, with rediffing and cleaning from me.
Reported-by: NSebastian Kapfer <sebastian_kapfer@gmx.net>
Reported-by: NOlaf Hering <olh@suse.de>
Signed-off-by: NPhil Dibowitz <phil@ipom.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

The stick replies to the door lock commands with a check condition (e.g.
FAIL status in a normal bulk CSW), but the subsequent REQUEST SENSE
returns all-zero sense. The situation is documented in our Bugzilla,
including usbmon traces.
	https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=162559

The error is purely cosmetic, data integrity is not in danger.
But I thought we might as well do it. It looks nicer that way.

I discussed this with Phil and he told me to submit directly.
Signed-off-by: NPete Zaitcev <zaitcev@redhat.com>
Signed-off-by: NPhil Dibowitz <phil@ipom.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This is patch as550 from Alan Stern.

Apparently someone changed the SCSI core so that it no longer holds the
host lock when doing a device or bus reset.  usb-storage was updated at
the time, but the change was done carelessly.  Some of the code depends
on that lock being held.

This patch reintroduces the host lock where needed and tries to clarify
the comments explaining why the lock is necessary.  It also moves the
code that clears the TIMED_OUT and ABORTING bitflags so that it executes
as soon as the timed-out command has completed (and while the host lock
is held).
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NMatthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

As sugested by Alan Stern here are a few code cleanups for onetouch.c:

-Check number of endpoints before directly referencing intf->endpoint[2]
-Use defined constants instead of magic numbers
-Revmove the non-ascii characters from copyright notice
-Make registration and deregistration messages more similar
Signed-off-by: NNick Sillik <n.sillik@temple.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Adding flash-device support to the shuttle_usbat driver in 2.6.11
introduced the need to detect which type of device we are dealing with:
CDRW drive, or flash media reader.

The detection routine used turned out to not work for HP8200 CDRW users,
who saw their devices being detected as a flash disk.

This patch (which has been tested on both flash and cdrom) removes some
unnecessary code, moves device detection to much later during
initialization, and introduces a new detection routine which appears to
work.
Signed-off-by: NDaniel Drake <dsd@gentoo.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

29 July 2005, Cambridge, MA:

This afternoon Alan Stern submitted a patch to remove the URB_ASYNC_UNLINK
flag from the Linux kernel.  Mr. Stern explained, "This flag is a relic
from an earlier, less-well-designed system.  For over a year it hasn't
been used for anything other than printing warning messages."

An anonymous spokesman for the Linux kernel development community
commented, "This is exactly the sort of thing we see happening all the
time.  As the kernel evolves, support for old techniques and old code can
be jettisoned and replaced by newer, better approaches.  Proprietary
operating systems do not have the freedom or flexibility to change so
quickly."

Mr. Stern, a staff member at Harvard University's Rowland Institute who
works on Linux only as a hobby, noted that the patch (labelled as548) did
not update two files, keyspan.c and option.c, in the USB drivers' "serial"
subdirectory.  "Those files need more extensive changes," he remarked.
"They examine the status field of several URBs at times when they're not
supposed to.  That will need to be fixed before the URB_ASYNC_UNLINK flag
is removed."

Greg Kroah-Hartman, the kernel maintainer responsible for overseeing all
of Linux's USB drivers, did not respond to our inquiries or return our
calls.  His only comment was "Applied, thanks."
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch started life as as479b, and has been rediffed.  Please note
the order of submission of this latest patch series -- even tho this has
an older original number, it is the last patch I'll be sending today.

This patch changes the reported SCSI revision level to 2 for all
disk-type devices.  This is needed in a few cases because the device
reports a level of 3 or higher but then crashes when given a REPORT LUNS
command (for which support is supposed to be mandatory at those levels).
This shouldn't harm us, since it only matters for sparse LUNs and we
have separate ways of coping with that.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NMatthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch is originally from Nick Sillik, and has been rediffed against
the latest tree.

This patch adds usability to the OneTouch Button on Maxtor External USB
Hard Drives. Using an unusual device entry it declares an extra init
function which claims the interrupt endpoint associated with this
button.  The button is connected to the input system.
Signed-off-by: NNick Sillik <n.sillik@temple.edu>
Signed-off-by: NMatthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch started life as as534, and has been re-diffed against the latest
tree.

usb-storage has a small loophole, a window between the time queuecommand
accepts a new command and the time the control thread starts to execute
it.  If disconnect is called during that window, the driver won't cancel
the pending command -- we've been relying on the SCSI core to cancel it
for us during host removal.  But it's better for usb-storage to cancel
it;  this avoids races and reduces reliance on the SCSI core.
Fortunately cancelling these commands is easy to do; the key is to do it
_before_ calling scsi_remove_host.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NMatthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch started life as as533, and has been re-diffed against the
current tree.

Disconnect processing in usb-storage naturally divides into two parts:
one to quiesce the driver (make sure no commands are executing or
queued) and remove the host, and the other to deallocate all the USB and
non-USB resources.  This patch creates two subroutines to handle those
two parts.  Mostly it's just code movement, but there is one significant
change.  If the scsi-scanning thread fails to initialize but the host
has successfully been added, we need to quiesce the driver before
removing the host.  After all, it's possible that scanning could have
been initiated from somewhere else, such as userspace -- very low
probability, but it's easily handled by calling the new subroutine.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NMatthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>