[SCSI] allow sleeping in ->eh_device_reset_handler()

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c
index bec4406..057ed45 100644
--- a/drivers/scsi/megaraid/megaraid_mbox.c
+++ b/drivers/scsi/megaraid/megaraid_mbox.c
@@ -2726,7 +2726,7 @@
  * host
  **/
 static int
-megaraid_reset_handler(struct scsi_cmnd *scp)
+__megaraid_reset_handler(struct scsi_cmnd *scp)
 {
 	adapter_t	*adapter;
 	scb_t		*scb;
@@ -2847,6 +2847,18 @@
 	return rval;
 }
 
+static int
+megaraid_reset_handler(struct scsi_cmnd *cmd)
+{
+	int rc;
+
+	spin_lock_irq(cmd->device->host->host_lock);
+	rc = __megaraid_reset_handler(cmd);
+	spin_unlock_irq(cmd->device->host->host_lock);
+
+	return rc;
+}
+
 
 /*
  * START: internal commands library