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-rw-r--r--arch/i386/kernel/cpu/cpufreq/longhaul.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/i386/kernel/cpu/cpufreq/longhaul.c b/arch/i386/kernel/cpu/cpufreq/longhaul.c
index 83a8793f1db8..43bbf948d45d 100644
--- a/arch/i386/kernel/cpu/cpufreq/longhaul.c
+++ b/arch/i386/kernel/cpu/cpufreq/longhaul.c
@@ -65,7 +65,7 @@ static int port22_en = 0;
/* Module parameters */
static int dont_scale_voltage;
-
+static int ignore_latency = 0;
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "longhaul", msg)
@@ -665,8 +665,10 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
if (longhaul_version == TYPE_POWERSAVER) {
/* Check ACPI support for C3 state */
cx = &pr->power.states[ACPI_STATE_C3];
- if (cx->address == 0 || cx->latency > 1000)
+ if (cx->address == 0 ||
+ (cx->latency > 1000 && ignore_latency == 0) )
goto err_acpi;
+
} else {
/* Check ACPI support for bus master arbiter disable */
if (!pr->flags.bm_control) {
@@ -773,6 +775,8 @@ static void __exit longhaul_exit(void)
module_param (dont_scale_voltage, int, 0644);
MODULE_PARM_DESC(dont_scale_voltage, "Don't scale voltage of processor");
+module_param(ignore_latency, int, 0644);
+MODULE_PARM_DESC(ignore_latency, "Skip ACPI C3 latency test");
MODULE_AUTHOR ("Dave Jones <davej@codemonkey.org.uk>");
MODULE_DESCRIPTION ("Longhaul driver for VIA Cyrix processors.");
@@ -780,4 +784,3 @@ MODULE_LICENSE ("GPL");
late_initcall(longhaul_init);
module_exit(longhaul_exit);
-
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