static int __init acpi_init (void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_init");
printk(KERN_INFO PREFIX "Subsystem revision %08x\n",
ACPI_CA_VERSION);
if (acpi_disabled) {
printk(KERN_INFO PREFIX "Interpreter disabled.\n");
return_VALUE(-ENODEV);
}
firmware_register(&acpi_subsys);
result = acpi_bus_init();
if (!result) {
#ifdef CONFIG_PM
if (!PM_IS_ACTIVE())
pm_active = 1;
else {
printk(KERN_INFO PREFIX "APM is already active, exiting\n");
disable_acpi();
result = -ENODEV;
}
#endif
} else
disable_acpi();
return_VALUE(result);
}
/*
* Just start the APM thread. We do NOT want to do APM BIOS
* calls from anything but the APM thread, if for no other reason
* than the fact that we don't trust the APM BIOS. This way,
* most common APM BIOS problems that lead to protection errors
* etc will have at least some level of being contained...
*
* In short, if something bad happens, at least we have a choice
* of just killing the apm thread..
*/
static int __init apm_init(void)
{
if (apm_bios_info.version == 0) {
printk(KERN_INFO "apm: BIOS not found.\n");
APM_INIT_ERROR_RETURN;
}
printk(KERN_INFO
"apm: BIOS version %d.%d Flags 0x%02x (Driver version %s)\n",
((apm_bios_info.version >> 8) & 0xff),
(apm_bios_info.version & 0xff),
apm_bios_info.flags,
driver_version);
if (apm_disabled) {
printk(KERN_NOTICE "apm: disabled on user request.\n");
APM_INIT_ERROR_RETURN;
}
if (PM_IS_ACTIVE()) {
printk(KERN_NOTICE "apm: overridden by ACPI.\n");
APM_INIT_ERROR_RETURN;
}
pm_active = 1;
create_proc_info_entry("apm", 0, NULL, apm_get_info);
misc_register(&apm_device);
pm_power_off = pm_do_poweroff;
clear_dpcsr();
return 0;
}
