diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 2e53e6f..55fcbb5 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -299,6 +299,7 @@
 	"sym-userobj",
 	"printk-msg-only",
 	"context-info",
+	"latency-format",
 	NULL
 };
 
@@ -1829,26 +1830,12 @@
 	iter = __tracing_open(inode, file);
 	if (IS_ERR(iter))
 		ret = PTR_ERR(iter);
-
-	return ret;
-}
-
-static int tracing_lt_open(struct inode *inode, struct file *file)
-{
-	struct trace_iterator *iter;
-	int ret = 0;
-
-	iter = __tracing_open(inode, file);
-
-	if (IS_ERR(iter))
-		ret = PTR_ERR(iter);
-	else
+	else if (trace_flags & TRACE_ITER_LATENCY_FMT)
 		iter->iter_flags |= TRACE_FILE_LAT_FMT;
 
 	return ret;
 }
 
-
 static void *
 t_next(struct seq_file *m, void *v, loff_t *pos)
 {
@@ -1927,13 +1914,6 @@
 	.release	= tracing_release,
 };
 
-static struct file_operations tracing_lt_fops = {
-	.open		= tracing_lt_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= tracing_release,
-};
-
 static struct file_operations show_traces_fops = {
 	.open		= show_traces_open,
 	.read		= seq_read,