From: Dominik Brodowski <linux-X3ehHDuj6sIIGcDfoQAp7BvVK+yQ3ZXh@public.gmane.org>
To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
len.brown-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org
Subject: [PATCH 4/5] processor: nocst module parameter
Date: Thu, 23 Dec 2004 15:08:09 +0100 [thread overview]
Message-ID: <20041223140809.GD7973@dominikbrodowski.de> (raw)
Add a "nocst" module parameter which blocks _CST parsing and
always uses FADT info instead.
Signed-off-by: Dominik Brodowski <linux-JhLEnvuH02M@public.gmane.org>
---
drivers/acpi/processor_idle.c | 13 ++++++++++---
1 files changed, 10 insertions(+), 3 deletions(-)
Index: linux-2.6.10-rc3+bk-acpi/drivers/acpi/processor_idle.c
===================================================================
--- linux-2.6.10-rc3+bk-acpi.orig/drivers/acpi/processor_idle.c 2004-12-23 14:25:28.737417644 +0100
+++ linux-2.6.10-rc3+bk-acpi/drivers/acpi/processor_idle.c 2004-12-23 14:25:32.385908579 +0100
@@ -55,7 +55,10 @@
#define C3_OVERHEAD 4 /* 1us (3.579 ticks per us) */
static void (*pm_idle_save)(void);
-module_param_named(max_cstate, max_cstate, uint, 0644);
+module_param(max_cstate, uint, 0644);
+
+static unsigned int nocst = 0;
+module_param(nocst, uint, 0000);
/* --------------------------------------------------------------------------
Power Management
@@ -506,6 +509,10 @@
if (errata.smp)
return_VALUE(-ENODEV);
+
+ if (nocst)
+ return_VALUE(-ENODEV);
+
pr->power.count = 0;
for (i = 0; i < ACPI_PROCESSOR_MAX_POWER; i++)
memset(pr->power.states, 0, sizeof(struct acpi_processor_cx));
@@ -800,7 +807,7 @@
if (!pr)
return_VALUE(-EINVAL);
- if (errata.smp) {
+ if (errata.smp || nocst) {
return_VALUE(-ENODEV);
}
@@ -917,7 +924,7 @@
first_run++;
}
- if (!errata.smp && (pr->id == 0) && acpi_fadt.cst_cnt) {
+ if (!errata.smp && (pr->id == 0) && acpi_fadt.cst_cnt && !nocst) {
status = acpi_os_write_port(acpi_fadt.smi_cmd, acpi_fadt.cst_cnt, 8);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-------------------------------------------------------
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next reply other threads:[~2004-12-23 14:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-23 14:08 Dominik Brodowski [this message]
[not found] ` <20041223140809.GD7973-X3ehHDuj6sIIGcDfoQAp7BvVK+yQ3ZXh@public.gmane.org>
2004-12-23 20:10 ` [PATCH 4/5] processor: nocst module parameter Len Brown
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