[PATCH] hpet: fix drift and url (96803820) · Commits · 戴 / test

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>

drivers/char/hpet.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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;

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