ACPI: PM: Clean up printing messages

Replace the remaining ACPI_DEBUG_PRINT() instances in device_pm.c
with dev_dbg() invocations, drop the _COMPONENT and ACPI_MODULE_NAME()
definitions that are not used any more, and drop the no longer needed
ACPI_POWER_COMPONENT definition from the headers and documentation.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Documentation/firmware-guide/acpi/debug.rst

@@ -59,7 +59,6 @@ shows the supported mask values, currently these::
     ACPI_SBS_COMPONENT              0x00100000
     ACPI_FAN_COMPONENT              0x00200000
     ACPI_PCI_COMPONENT              0x00400000
-    ACPI_POWER_COMPONENT            0x00800000
     ACPI_CONTAINER_COMPONENT        0x01000000
     ACPI_SYSTEM_COMPONENT           0x02000000
     ACPI_THERMAL_COMPONENT          0x04000000

drivers/acpi/device_pm.c

@@ -10,6 +10,8 @@
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
 
+#define pr_fmt(fmt) "ACPI: PM: " fmt
+
 #include <linux/acpi.h>
 #include <linux/export.h>
 #include <linux/mutex.h>
@@ -20,9 +22,6 @@
 
 #include "internal.h"
 
-#define _COMPONENT	ACPI_POWER_COMPONENT
-ACPI_MODULE_NAME("device_pm");
-
 /**
  * acpi_power_state_string - String representation of ACPI device power state.
  * @state: ACPI device power state to return the string representation of.
@@ -130,8 +129,8 @@ int acpi_device_get_power(struct acpi_device *device, int *state)
 	*state = result;
 
  out:
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] power state is %s\n",
-			  device->pnp.bus_id, acpi_power_state_string(*state)));
+	dev_dbg(&device->dev, "Device power state is %s\n",
+		acpi_power_state_string(*state));
 
 	return 0;
 }
@@ -174,9 +173,8 @@ int acpi_device_set_power(struct acpi_device *device, int state)
 
 	/* There is a special case for D0 addressed below. */
 	if (state > ACPI_STATE_D0 && state == device->power.state) {
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] already in %s\n",
-				  device->pnp.bus_id,
-				  acpi_power_state_string(state)));
+		dev_dbg(&device->dev, "Device already in %s\n",
+			acpi_power_state_string(state));
 		return 0;
 	}
 
@@ -276,10 +274,8 @@ int acpi_device_set_power(struct acpi_device *device, int state)
 			 acpi_power_state_string(target_state));
 	} else {
 		device->power.state = target_state;
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Device [%s] transitioned to %s\n",
-				  device->pnp.bus_id,
-				  acpi_power_state_string(target_state)));
+		dev_dbg(&device->dev, "Power state changed to %s\n",
+			acpi_power_state_string(target_state));
 	}
 
 	return result;

drivers/acpi/sysfs.c

@@ -59,7 +59,6 @@ static const struct acpi_dlayer acpi_debug_layers[] = {
 	ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
 	ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
 	ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
-	ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT),
 	ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
 	ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
 	ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT),

include/acpi/acpi_drivers.h

@@ -22,7 +22,6 @@
 #define ACPI_SBS_COMPONENT		0x00100000
 #define ACPI_FAN_COMPONENT		0x00200000
 #define ACPI_PCI_COMPONENT		0x00400000
-#define ACPI_POWER_COMPONENT		0x00800000
 #define ACPI_CONTAINER_COMPONENT	0x01000000
 #define ACPI_SYSTEM_COMPONENT		0x02000000
 #define ACPI_THERMAL_COMPONENT		0x04000000