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-rw-r--r--tools/power/x86/intel-speed-select/isst-daemon.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/power/x86/intel-speed-select/isst-daemon.c b/tools/power/x86/intel-speed-select/isst-daemon.c
index 0699137c0901..4ad6a64f1545 100644
--- a/tools/power/x86/intel-speed-select/isst-daemon.c
+++ b/tools/power/x86/intel-speed-select/isst-daemon.c
@@ -174,6 +174,8 @@ static void daemonize(char *rundir, char *pidfile)
close(i);
i = open("/dev/null", O_RDWR);
+ if (i < 0)
+ exit(EXIT_FAILURE);
ret = dup(i);
if (ret == -1)
exit(EXIT_FAILURE);