From: Len Brown <len.brown@intel.com>
Date: Sat, 16 Oct 2010 01:25:02 +0000 (-0400)
Subject: acpi_idle: delete bogus data from cpuidle_state.power_usage
X-Git-Tag: v2.6.37-rc1~101^2~2
X-Git-Url: https://bbs.cooldavid.org/git/?a=commitdiff_plain;h=0f3f164d9794f57d8afb033819f508a486c1304d;p=net-next-2.6.git

acpi_idle: delete bogus data from cpuidle_state.power_usage

The mW data in this field comes from AML _CST,
which was typed in by a BIOS writer, and is thus
considered unreliable.

Linux does not use it for making any decisions.
We do display it in sysfs where somebody might
read it and assume it is meaningful, so delete it.

Signed-off-by: Len Brown <len.brown@intel.com>
---

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index f4428e82b35..07a8bb6506f 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -1013,7 +1013,6 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
 		strncpy(state->desc, cx->desc, CPUIDLE_DESC_LEN);
 		state->exit_latency = cx->latency;
 		state->target_residency = cx->latency * latency_factor;
-		state->power_usage = cx->power;
 
 		state->flags = 0;
 		switch (cx->type) {