commit c41679a4481d5bf9908d99644d47b2e8ff6f028f
author Bob Moore <robert.moore@intel.com> Mon Dec 31 00:05:46 2012 +0000
committer Rafael J. Wysocki <rafael.j.wysocki@intel.com> Thu Jan 10 12:36:20 2013 +0100
tree 89a95a2f59b1406722644bf47976a071f9835e71
parent c8d586f8ed0146d81186131df66cdbb19c41acda

ACPICA: Add time macros for various timer/time manipulation.

Constants for time manipulation, including constants for the 100
nanosecond timers. Chao Guan, Bob Moore, Lv Zheng.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/hwtimer.c

diff --git a/drivers/acpi/acpica/hwtimer.c b/drivers/acpi/acpica/hwtimer.c
index bfdce22..4e741d8 100644
--- a/drivers/acpi/acpica/hwtimer.c
+++ b/drivers/acpi/acpica/hwtimer.c
@@ -176,10 +176,11 @@
 	/*
 	 * Compute Duration (Requires a 64-bit multiply and divide):
 	 *
-	 * time_elapsed = (delta_ticks * 1000000) / PM_TIMER_FREQUENCY;
+	 * time_elapsed (microseconds) =
+	 *  (delta_ticks * ACPI_USEC_PER_SEC) / ACPI_PM_TIMER_FREQUENCY;
 	 */
-	status = acpi_ut_short_divide(((u64) delta_ticks) * 1000000,
-				      PM_TIMER_FREQUENCY, &quotient, NULL);
+	status = acpi_ut_short_divide(((u64)delta_ticks) * ACPI_USEC_PER_SEC,
+				      ACPI_PM_TIMER_FREQUENCY, &quotient, NULL);
 
 	*time_elapsed = (u32) quotient;
 	return_ACPI_STATUS(status);