Commit 541adf7c authored by Len Brown's avatar Len Brown

ACPI: allow a native cpuidle driver to displace ACPI

The ACPI driver would fail probe when it found that
another driver had previously registered with cpuidle.

But this is a natural situation, as a native hardware
cpuidle driver should be able to bind instead of ACPI,
and the ACPI processor driver should be able to handle
yielding control of C-states while still handling
P-states and T-states.

Add a KERN_DEBUG line showing when acpi_idle
does successfully register.
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 752138df
......@@ -616,7 +616,8 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device)
acpi_processor_get_limit_info(pr);
acpi_processor_power_init(pr, device);
if (cpuidle_get_driver() == &acpi_idle_driver)
acpi_processor_power_init(pr, device);
pr->cdev = thermal_cooling_device_register("Processor", device,
&processor_cooling_ops);
......@@ -920,9 +921,10 @@ static int __init acpi_processor_init(void)
if (!acpi_processor_dir)
return -ENOMEM;
#endif
result = cpuidle_register_driver(&acpi_idle_driver);
if (result < 0)
goto out_proc;
if (!cpuidle_register_driver(&acpi_idle_driver))
printk(KERN_DEBUG "ACPI: %s registered with cpuidle\n",
acpi_idle_driver.name);
result = acpi_bus_register_driver(&acpi_processor_driver);
if (result < 0)
......@@ -941,7 +943,6 @@ static int __init acpi_processor_init(void)
out_cpuidle:
cpuidle_unregister_driver(&acpi_idle_driver);
out_proc:
#ifdef CONFIG_ACPI_PROCFS
remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir);
#endif
......
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