ACPI: thermal: create "thermal.off=1" to disable ACPI thermal support
"thermal.off=1" disables all ACPI thermal support at boot time. CONFIG_ACPI_THERMAL=n can do this at build time. "# rmmod thermal" can do this at run time, as long as thermal is built as a module. WARNING: On some systems, disabling ACPI thermal support will cause the system to run hotter and reduce the lifetime of the hardware. Signed-off-by: Len Brown <len.brown@intel.com>
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@ -1820,6 +1820,9 @@ and is between 256 and 4096 characters. It is defined in the file
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thash_entries= [KNL,NET]
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Set number of hash buckets for TCP connection
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thermal.off= [HW,ACPI]
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1: disable ACPI thermal control
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time Show timing data prefixed to each printk message line
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[deprecated, see 'printk.time']
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@ -78,6 +78,10 @@ static int tzp;
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module_param(tzp, int, 0);
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MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds.\n");
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static int off;
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module_param(off, int, 0);
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MODULE_PARM_DESC(off, "Set to disable ACPI thermal support.\n");
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static int acpi_thermal_add(struct acpi_device *device);
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static int acpi_thermal_remove(struct acpi_device *device, int type);
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static int acpi_thermal_resume(struct acpi_device *device);
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@ -1285,7 +1289,10 @@ static int __init acpi_thermal_init(void)
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{
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int result = 0;
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if (off) {
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printk(KERN_NOTICE "ACPI: thermal control disabled\n");
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return -ENODEV;
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}
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acpi_thermal_dir = proc_mkdir(ACPI_THERMAL_CLASS, acpi_root_dir);
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if (!acpi_thermal_dir)
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return -ENODEV;
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