Commit a528ab7a authored Dec 03, 2008 by Brian King Committed by James Bottomley Dec 29, 2008

[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 <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

parent 1c41fa82

drivers/scsi/ibmvscsi/ibmvfc.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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);