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Date:	Mon, 16 May 2011 07:56:14 +0200
From:	Hannes Reinecke <>
To:	Oliver Neukum <>
Cc:	James Bottomley <>,
	"Rafael J. Wysocki" <>, Charles Hannum <>,, Greg Kroah-Hartman <>,
	Alan Stern <>,
	linux-scsi <>,
Subject: Re: [PATCH] scsi/sd: fix suspend with USB-connected Android phone
 (one line)

On 05/14/2011 09:11 PM, Oliver Neukum wrote:
> Am Donnerstag, 12. Mai 2011, 22:36:03 schrieb James Bottomley:
>> Instinct tells me the correct set of fixes is to add a sync cache from
>> release (so we automatically sync on last close, which is usually when
>> an ordered remove happens), keep the one on shutdown, just in case the
>> system goes down with stuff still mounted and print a nasty message on
>> suspend for a write back device that's been removed.
>> I also think we shouldn't abort the suspend if the disk doesn't respond
>> correctly to start/stop ... the power is going to be disconnected
>> anyway, so it's no issue if the disk spins for a second or so longer.
>> The problem this is going to cause is double sync on shutdown (once when
>> final unmount closes the device and once on shutdown) ... do people
>> agree that's a price worth paying?
>> Something like this?
> Hi,
> it seems to me that the error codes should really be evaluated a bit better.
> How about this?
> 	Regards
> 		Oliver
>  From 2ab03ae46d6dc126a51ee9cd38206fbdc8bf6a34 Mon Sep 17 00:00:00 2001
> From: Oliver Neukum<>
> Date: Mon, 25 Oct 2010 12:25:26 +0200
> Subject: [PATCH 2/5] SCSI:sd:error handling in sd_sync_cache()
> The SCSI commands sd_sync_cache() uses may fail.
> These errors needs to be evaluated to return correct
> error codes. This fixes system suspension while a device
> removal is being handled.
> Signed-off-by: Oliver NEukum<>
Yep, this makes sense.

Acked-by: Hannes Reinecke <>


Dr. Hannes Reinecke		      zSeries & Storage			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)
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