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Date:   Thu, 6 Feb 2020 13:46:44 +0100
From:   Daniel Wagner <dwagner@suse.de>
To:     mwilck@suse.com
Cc:     "Martin K. Petersen" <martin.petersen@oracle.com>,
        Himanshu Madhani <hmadhani@marvell.com>,
        Quinn Tran <qutran@marvell.com>,
        Roman Bolshakov <r.bolshakov@yadro.com>,
        Hannes Reinecke <hare@suse.de>,
        Bart Van Assche <Bart.VanAssche@sandisk.com>,
        James Bottomley <jejb@linux.vnet.ibm.com>,
        linux-scsi@vger.kernel.org
Subject: Re: [PATCH v2 3/3] scsi: qla2xxx: set UNLOADING before waiting for
 session deletion
Message-ID: <20200206124644.kcd2ilfksmjkjppo@beryllium.lan>
References: <20200205214422.3657-1-mwilck@suse.com>
 <20200205214422.3657-4-mwilck@suse.com>
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On Wed, Feb 05, 2020 at 10:44:22PM +0100, mwilck@suse.com wrote:
> From: Martin Wilck <mwilck@suse.com>
> 
> The purpose of the UNLOADING flag is to avoid port login procedures
> to continue when a controller is in the process of shutting down.
> It makes sense to set this flag before starting session teardown.
> The only operations that must be able to continue are LOGO, PRLO,
> and the like.
> 
> Furthermore, use atomic test_and_set_bit() to avoid the shutdown
> being run multiple times in parallel. In qla2x00_disable_board_on_pci_error(),
> the test for UNLOADING is postponed until after the check for an already
> disabled PCI board.
> 
> Signed-off-by: Martin Wilck <mwilck@suse.com>

Reviewed-by: Daniel Wagner <dwagner@suse.de>