From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mike Christie <michaelc@cs.wisc.edu>
Subject: Re: [RFC] How to fix an async scan - rmmod race?
Date: Wed, 11 Apr 2012 16:46:38 -0500
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To: Bart Van Assche <bvanassche@acm.org>
Cc: Tomas Henzl <thenzl@redhat.com>, "'linux-scsi@vger.kernel.org'" <linux-scsi@vger.kernel.org>, Stanislaw Gruszka <sgruszka@redhat.com>

On 04/06/2012 12:22 PM, Mike Christie wrote:
> 1. A transport class or scsi_sysfs.c initiate a scan.
> 2. A user could rmmod the LLD.
> 3. The LLD will call the transport remove host if there is one and then
> scsi_remove_host.

You do not have to worry about this. The scsi scan mutex and host state
checks will protect against it.