Adds support for a changeable queue depth to ibmvscsi.
Signed-off-by: Brian King <brking@xxxxxxxxxxxxxxxxxx>
---
linux-2.6-bjking1/drivers/scsi/ibmvscsi/ibmvscsi.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff -puN drivers/scsi/ibmvscsi/ibmvscsi.c~ibmvscsi_change_q_depth drivers/scsi/ibmvscsi/ibmvscsi.c
--- linux-2.6/drivers/scsi/ibmvscsi/ibmvscsi.c~ibmvscsi_change_q_depth 2007-05-29 09:31:43.000000000 -0500
+++ linux-2.6-bjking1/drivers/scsi/ibmvscsi/ibmvscsi.c 2007-05-29 09:31:43.000000000 -0500
@@ -1375,6 +1375,20 @@ static int ibmvscsi_slave_configure(stru
return 0;
}
+/**
+ * ibmvscsi_change_queue_depth - Change the device's queue depth
+ * @sdev: scsi device struct
+ * @qdepth: depth to set
+ *
+ * Return value:
+ * actual depth set
+ **/
+static int ibmvscsi_change_queue_depth(struct scsi_device *sdev, int qdepth)
+{
+ scsi_adjust_queue_depth(sdev, 0, qdepth);
+ return sdev->queue_depth;
+}
+
/* ------------------------------------------------------------
* sysfs attributes
*/
@@ -1521,6 +1535,7 @@ static struct scsi_host_template driver_
.eh_abort_handler = ibmvscsi_eh_abort_handler,
.eh_device_reset_handler = ibmvscsi_eh_device_reset_handler,
.slave_configure = ibmvscsi_slave_configure,
+ .change_queue_depth = ibmvscsi_change_queue_depth,
.cmd_per_lun = 16,
.can_queue = IBMVSCSI_MAX_REQUESTS_DEFAULT,
.this_id = -1,
_
-
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