From: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
CONFIG_ACPI_PROCFS=n:
drivers/acpi/processor_idle.c:83: warning: 'us_to_pm_timer_ticks' defined but not used.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: Venkatesh Pallipadi <venki@xxxxxxxxxx>
Cc: Len Brown <len.brown@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/acpi/processor_idle.c | 3 +++
1 file changed, 3 insertions(+)
diff -puN drivers/acpi/processor_idle.c~acpi-fix-unused-function-warning drivers/acpi/processor_idle.c
--- a/drivers/acpi/processor_idle.c~acpi-fix-unused-function-warning
+++ a/drivers/acpi/processor_idle.c
@@ -80,10 +80,13 @@ module_param(nocst, uint, 0000);
static unsigned int latency_factor __read_mostly = 2;
module_param(latency_factor, uint, 0644);
+#ifdef CONFIG_ACPI_PROCFS
static u64 us_to_pm_timer_ticks(s64 t)
{
return div64_u64(t * PM_TIMER_FREQUENCY, 1000000);
}
+#endif
+
/*
* IBM ThinkPad R40e crashes mysteriously when going into C2 or C3.
* For now disable this. Probably a bug somewhere else.
_
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