fix hpet drift and url

PATCH New Alex Williamson 1 participant 1 message Aug 30, 2005

Subsystems (2)

Char and misc drivers Hpet: High Precision Event Timers driver

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Alex Williamson

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2005-08-30 17:39 UTC #0 lore raw

PATCH 1/1 fix hpet 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 <[email protected]>

drivers/char/hpet.c +2 -2

diff -r 38ae29531c91 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 @@
 	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;