diff options
Diffstat (limited to 'arch/i386/kernel/cpu')
| -rw-r--r-- | arch/i386/kernel/cpu/cpufreq/longhaul.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/i386/kernel/cpu/cpufreq/longhaul.c b/arch/i386/kernel/cpu/cpufreq/longhaul.c index 8eca59d4c8f..ef8f0bc3fc7 100644 --- a/arch/i386/kernel/cpu/cpufreq/longhaul.c +++ b/arch/i386/kernel/cpu/cpufreq/longhaul.c @@ -75,6 +75,7 @@ static unsigned int longhaul_index; /* Module parameters */ static int scale_voltage; +static int disable_acpi_c3; #define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "longhaul", msg) @@ -844,6 +845,9 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy) if (cx->address > 0 && cx->latency <= 1000) longhaul_flags |= USE_ACPI_C3; } + /* Disable if it isn't working */ + if (disable_acpi_c3) + longhaul_flags &= ~USE_ACPI_C3; /* Check if northbridge is friendly */ if (enable_arbiter_disable()) longhaul_flags |= USE_NORTHBRIDGE; @@ -952,6 +956,9 @@ static void __exit longhaul_exit(void) kfree(longhaul_table); } +module_param (disable_acpi_c3, int, 0644); +MODULE_PARM_DESC(disable_acpi_c3, "Don't use ACPI C3 support"); + module_param (scale_voltage, int, 0644); MODULE_PARM_DESC(scale_voltage, "Scale voltage of processor"); |