1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/timers/hpet_example.c b/Documentation/timers/hpet_example.c
index 4bfafb7..9a3e701 100644
--- a/Documentation/timers/hpet_example.c
+++ b/Documentation/timers/hpet_example.c
@@ -97,6 +97,33 @@ hpet_open_close(int argc, const char **argv)
 void
 hpet_info(int argc, const char **argv)
 {
+	struct hpet_info	info;
+	int			fd;
+
+	if (argc != 1) {
+		fprintf(stderr, "hpet_info: device-name\n");
+		return;
+	}
+
+	fd = open(argv[0], O_RDONLY);
+	if (fd < 0) {
+		fprintf(stderr, "hpet_info: open of %s failed\n", argv[0]);
+		return;
+	}
+
+	if (ioctl(fd, HPET_INFO, &info) < 0) {
+		fprintf(stderr, "hpet_info: failed to get info\n");
+		goto out;
+	}
+
+	fprintf(stderr, "hpet_info: hi_irqfreq 0x%lx hi_flags 0x%lx ",
+		info.hi_ireqfreq, info.hi_flags);
+	fprintf(stderr, "hi_hpet %d hi_timer %d\n",
+		info.hi_hpet, info.hi_timer);
+
+out:
+	close(fd);
+	return;
 }
 
 void