we need to pass back the rtc device name that was actually used so that we can turn around and check its sysfs status

1 files changed, 8 insertions, 6 deletions

diff --git a/libbb/rtc.c b/libbb/rtc.c
index 4cbf32206..78f10c65d 100644
--- a/libbb/rtc.c
+++ b/libbb/rtc.c
@@ -40,21 +40,23 @@ int rtc_adjtime_is_utc(void)
         return utc;
 }
 
-int rtc_xopen(const char *default_rtc, int flags)
+int rtc_xopen(const char **default_rtc, int flags)
 {
         int rtc;
 
-        if (!default_rtc) {
-                rtc = open("/dev/rtc", flags);
+        if (!*default_rtc) {
+                *default_rtc = "/dev/rtc";
+                rtc = open(*default_rtc, flags);
                 if (rtc >= 0)
                         return rtc;
-                rtc = open("/dev/rtc0", flags);
+                *default_rtc = "/dev/rtc0";
+                rtc = open(*default_rtc, flags);
                 if (rtc >= 0)
                         return rtc;
-                default_rtc = "/dev/misc/rtc";
+                *default_rtc = "/dev/misc/rtc";
         }
 
-        return xopen(default_rtc, flags);
+        return xopen(*default_rtc, flags);
 }
 
 time_t rtc_read_time(int fd, int utc)