[SCSI] ibmvscsi: add slave_configure to allow device restart
Fixed the kernel-doc comment for ibmvscsi_slave_configure. Thanks to
Randy Dunlap for pointing this out.
Adding a slave_configure function for the driver. Now the disks can be
restarted by the scsi mid-layer when the are disconnected and reconnected.
Signed-off-by: "Robert Jennings" <rcj@linux.vnet.ibm.com>
Signed-off-by: "Santiago Leon" <santil@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
index 383f594..b10eefe 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -1354,6 +1354,27 @@
return rc;
}
+/**
+ * ibmvscsi_slave_configure: Set the "allow_restart" flag for each disk.
+ * @sdev: struct scsi_device device to configure
+ *
+ * Enable allow_restart for a device if it is a disk. Adjust the
+ * queue_depth here also as is required by the documentation for
+ * struct scsi_host_template.
+ */
+static int ibmvscsi_slave_configure(struct scsi_device *sdev)
+{
+ struct Scsi_Host *shost = sdev->host;
+ unsigned long lock_flags = 0;
+
+ spin_lock_irqsave(shost->host_lock, lock_flags);
+ if (sdev->type == TYPE_DISK)
+ sdev->allow_restart = 1;
+ scsi_adjust_queue_depth(sdev, 0, shost->cmd_per_lun);
+ spin_unlock_irqrestore(shost->host_lock, lock_flags);
+ return 0;
+}
+
/* ------------------------------------------------------------
* sysfs attributes
*/
@@ -1499,6 +1520,7 @@
.queuecommand = ibmvscsi_queuecommand,
.eh_abort_handler = ibmvscsi_eh_abort_handler,
.eh_device_reset_handler = ibmvscsi_eh_device_reset_handler,
+ .slave_configure = ibmvscsi_slave_configure,
.cmd_per_lun = 16,
.can_queue = IBMVSCSI_MAX_REQUESTS_DEFAULT,
.this_id = -1,