ACPI / processor: use ACPI_COMPANION() to get ACPI device

Use ACPI_COMPANION() to get an ACPI device instead of
acpi_bus_get_device() in the processor driver.

Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
[rjw: Changelog]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 146ab7e2b81d..c1c35623550f 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -224,9 +224,9 @@ static int __acpi_processor_start(struct acpi_device *device)
 
 static int acpi_processor_start(struct device *dev)
 {
-        struct acpi_device *device;
+        struct acpi_device *device = ACPI_COMPANION(dev);
 
-        if (acpi_bus_get_device(ACPI_HANDLE(dev), &device))
+        if (!device)
                 return -ENODEV;
 
         return __acpi_processor_start(device);
@@ -234,10 +234,10 @@ static int acpi_processor_start(struct device *dev)
 
 static int acpi_processor_stop(struct device *dev)
 {
-        struct acpi_device *device;
+        struct acpi_device *device = ACPI_COMPANION(dev);
         struct acpi_processor *pr;
 
-        if (acpi_bus_get_device(ACPI_HANDLE(dev), &device))
+        if (!device)
                 return 0;
 
         acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,