From 0edcc47cdb7f2d80c1e7236f5f797b7443cb2142 Mon Sep 17 00:00:00 2001
From: "Bryant G. Ly" <bgly@us.ibm.com>
Date: Mon, 9 Jan 2017 10:21:20 -0600
Subject: ibmvscsis: Fix srp_transfer_data fail return code

commit 7c9d8d0c41b3e24473ac7648a7fc2d644ccf08ff upstream.

If srp_transfer_data fails within ibmvscsis_write_pending, then
the most likely scenario is that the client timed out the op and
removed the TCE mapping. Thus it will loop forever retrying the
op that is pretty much guaranteed to fail forever. A better return
code would be EIO instead of EAGAIN.

Reported-by: Steven Royer <seroyer@linux.vnet.ibm.com>
Tested-by: Steven Royer <seroyer@linux.vnet.ibm.com>
Signed-off-by: Bryant G. Ly <bgly@us.ibm.com>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
index 642b739..608140f 100644
--- a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
+++ b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
@@ -3702,7 +3702,7 @@ static int ibmvscsis_write_pending(struct se_cmd *se_cmd)
 			       1, 1);
 	if (rc) {
 		pr_err("srp_transfer_data() failed: %d\n", rc);
-		return -EAGAIN;
+		return -EIO;
 	}
 	/*
 	 * We now tell TCM to add this WRITE CDB directly into the TCM storage
-- 
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