From a528ab7a324f1dbb3598ae0ecd238ab7dd974294 Mon Sep 17 00:00:00 2001 From: Brian King Date: Wed, 3 Dec 2008 11:02:56 -0600 Subject: [PATCH] [SCSI] ibmvfc: Fix errors due to inconsistent command data In order to ensure the VIOS sees a consistent command buffer, we need to add a memory barrier after building the command buffer but before sending the command. Signed-off-by: Brian King Signed-off-by: James Bottomley --- drivers/scsi/ibmvscsi/ibmvfc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index 2aa3d695d548..a401e938a87a 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -1381,6 +1381,8 @@ static int ibmvfc_send_event(struct ibmvfc_event *evt, add_timer(&evt->timer); } + mb(); + if ((rc = ibmvfc_send_crq(vhost, crq_as_u64[0], crq_as_u64[1]))) { list_del(&evt->queue); del_timer(&evt->timer);