From e0af8069c12f61e794e6d9a0ee089073e62869fe Mon Sep 17 00:00:00 2001
From: Miroslav Lichvar <mlichvar@redhat.com>
Date: Mon, 18 Aug 2014 17:34:25 +0200
Subject: [PATCH] rtc: don't try to open rtcfile when not set

---
 rtc_linux.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/rtc_linux.c b/rtc_linux.c
index c45ae2b..0b2b0d0 100644
--- a/rtc_linux.c
+++ b/rtc_linux.c
@@ -438,8 +438,7 @@ read_coefs_from_file(void)
 
     tried_to_load_coefs = 1;
 
-    in = fopen(coefs_file_name, "r");
-    if (in) {
+    if (coefs_file_name && (in = fopen(coefs_file_name, "r"))) {
       if (fscanf(in, "%d%ld%lf%lf",
                  &valid_coefs_from_file,
                  &file_ref_time,