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[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>
This commit is contained in:
Alex Williamson 2005-09-06 15:17:54 -07:00 committed by Linus Torvalds
parent 414edcd32a
commit 96803820b3
1 changed files with 2 additions and 2 deletions
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4
drivers/char/hpet.c
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@ -44,7 +44,7 @@
/* /*
* The High Precision Event Timer driver. * The High Precision Event Timer driver.
* This driver is closely modelled after the rtc.c 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_USER_FREQ (64)
#define HPET_DRIFT (500) #define HPET_DRIFT (500)
@ -712,7 +712,7 @@ static void hpet_register_interpolator(struct hpets *hpetp)
ti->shift = 10; ti->shift = 10;
ti->addr = &hpetp->hp_hpet->hpet_mc; ti->addr = &hpetp->hp_hpet->hpet_mc;
ti->frequency = hpet_time_div(hpets->hp_period); ti->frequency = hpet_time_div(hpets->hp_period);
ti->drift = ti->frequency * HPET_DRIFT / 1000000; ti->drift = HPET_DRIFT;
ti->mask = -1; ti->mask = -1;
hpetp->hp_interpolator = ti; hpetp->hp_interpolator = ti;