Documentation/timers/hpet_example.c: add supporting info for hpet_example

$./hpet_example info /dev/hpet
-hpet: executing info
hpet_info: hi_irqfreq 0x0 hi_flags 0x0 hi_hpet 0 hi_timer 2

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Clemens Ladisch <clemens@ladisch.de>
Cc: "Venkatesh Pallipadi (Venki)" <venki@google.com>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/Documentation/timers/hpet_example.c b/Documentation/timers/hpet_example.c
index 4bfafb7bc4c5852b2796fa15572a753bcb717a6e..9a3e7012c1900be12f2967c3a71dffb9a71c772d 100644 (file)
--- 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