diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 8a5c017bb50c141bfca4d8206ac2a1805d224185..d85a0ad81a67ab5e0b20e2e6be941bd804c058bd 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -3276,7 +3276,7 @@ ftrace_regex_write(struct file *file, const char __user *ubuf,
 		ret = ftrace_process_regex(iter->hash, parser->buffer,
 					   parser->idx, enable);
 		trace_parser_clear(parser);
-		if (ret)
+		if (ret < 0)
 			goto out_unlock;
 	}