cciss: add transport mode attribute to sys

Signed-off-by: Joseph Handzik <joseph.t.handzik@beardog.cce.hp.com>
Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 61f0b5b6a415..6da7edea700a 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -641,6 +641,18 @@ static ssize_t host_store_rescan(struct device *dev,
 }
 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
 
+static ssize_t host_show_transport_mode(struct device *dev,
+                                 struct device_attribute *attr,
+                                 char *buf)
+{
+        struct ctlr_info *h = to_hba(dev);
+
+        return snprintf(buf, 20, "%s\n",
+                h->transMethod & CFGTBL_Trans_Performant ?
+                        "performant" : "simple");
+}
+static DEVICE_ATTR(transport_mode, S_IRUGO, host_show_transport_mode, NULL);
+
 static ssize_t dev_show_unique_id(struct device *dev,
                                  struct device_attribute *attr,
                                  char *buf)
@@ -813,6 +825,7 @@ static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL);
 static struct attribute *cciss_host_attrs[] = {
         &dev_attr_rescan.attr,
         &dev_attr_resettable.attr,
+        &dev_attr_transport_mode.attr,
         NULL
 };