linux-kernel - [PATCH 3.12 059/170] ibmvscsi: Abort init sequence during error recovery

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Message-Id: <a9b8dab6a9870e6d919c41b460888f46dc94fa56.1405685481.git.jslaby@suse.cz>
Date:	Fri, 18 Jul 2014 14:11:04 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Brian King <brking@...ux.vnet.ibm.com>,
	Christoph Hellwig <hch@....de>, Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 059/170] ibmvscsi: Abort init sequence during error recovery

From: Brian King <brking@...ux.vnet.ibm.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 9ee755974bea2f9880e517ec985dc9dede1b3a36 upstream.

If a CRQ reset is triggered for some reason while in the middle
of performing VSCSI adapter initialization, we don't want to
call the done function for the initialization MAD commands as
this will only result in two threads attempting initialization
at the same time, resulting in failures.

Signed-off-by: Brian King <brking@...ux.vnet.ibm.com>
Acked-by: Nathan Fontenot <nfont@...ux.vnet.ibm.com>
Signed-off-by: Christoph Hellwig <hch@....de>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/scsi/ibmvscsi/ibmvscsi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
index fa764406df68..c3d4991411b2 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -797,7 +797,8 @@ static void purge_requests(struct ibmvscsi_host_data *hostdata, int error_code)
 				       evt->hostdata->dev);
 			if (evt->cmnd_done)
 				evt->cmnd_done(evt->cmnd);
-		} else if (evt->done)
+		} else if (evt->done && evt->crq.format != VIOSRP_MAD_FORMAT &&
+			   evt->iu.srp.login_req.opcode != SRP_LOGIN_REQ)
 			evt->done(evt);
 		free_event_struct(&evt->hostdata->pool, evt);
 		spin_lock_irqsave(hostdata->host->host_lock, flags);
-- 
2.0.0

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