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@xxxxxxxxxxxxxxxxxx>
---
drivers/scsi/ibmvscsi/ibmvfc.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN drivers/scsi/ibmvscsi/ibmvfc.c~ibmvfc_add_sync drivers/scsi/ibmvscsi/ibmvfc.c
--- linux-2.6/drivers/scsi/ibmvscsi/ibmvfc.c~ibmvfc_add_sync 2008-11-26 15:05:03.000000000 -0600
+++ linux-2.6-bjking1/drivers/scsi/ibmvscsi/ibmvfc.c 2008-12-02 12:19:50.000000000 -0600
@@ -1381,6 +1381,8 @@ static int ibmvfc_send_event(struct ibmv
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);
_
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
