[PATCH] hpet: fix drift and url

The HPET driver is using a parts per second drift factor instead of the
standard parts per million drift the time interpolator code expects.  This
patch fixes that problem and updates the URL for the HPET spec.

Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Cc: "Robert W. Picco" <bob.picco@hp.com>
Acked-by: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 762fa430fb5be3b6a7615eed705e741509475ba7..a695f25e4497b647cb20c776f1f2f0a0e6b4d545 100644 (file)
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -44,7 +44,7 @@
 /*
  * The High Precision Event Timer driver.
  * This driver is closely modelled after the rtc.c driver.
- * http://www.intel.com/labs/platcomp/hpet/hpetspec.htm
+ * http://www.intel.com/hardwaredesign/hpetspec.htm
  */
 #define        HPET_USER_FREQ  (64)
 #define        HPET_DRIFT      (500)
@@ -712,7 +712,7 @@ static void hpet_register_interpolator(struct hpets *hpetp)
        ti->shift = 10;
        ti->addr = &hpetp->hp_hpet->hpet_mc;
        ti->frequency = hpet_time_div(hpets->hp_period);
-       ti->drift = ti->frequency * HPET_DRIFT / 1000000;
+       ti->drift = HPET_DRIFT;
        ti->mask = -1;
 
        hpetp->hp_interpolator = ti;