Merge branch 'acpi-messages'

* acpi-messages:
  hwmon: acpi_power_meter: Get rid of ACPICA message printing
  IIO: acpi-als: Get rid of ACPICA message printing
  ACPI: utils: Introduce acpi_evaluation_failure_warn()
  ACPI: Drop unused ACPI_*_COMPONENT definitions and update documentation
  ACPI: sysfs: Get rid of ACPICA message printing

Author: rafaeljw

Documentation/firmware-guide/acpi/debug.rst

@@ -1,18 +1,17 @@
 .. SPDX-License-Identifier: GPL-2.0
 
-=================
-ACPI Debug Output
-=================
+====================
+ACPI CA Debug Output
+====================
 
-The ACPI CA, the Linux ACPI core, and some ACPI drivers can generate debug
-output.  This document describes how to use this facility.
+The ACPI CA can generate debug output.  This document describes how to use this
+facility.
 
 Compile-time configuration
 ==========================
 
-ACPI debug output is globally enabled by CONFIG_ACPI_DEBUG.  If this config
-option is turned off, the debug messages are not even built into the
-kernel.
+The ACPI CA debug output is globally enabled by CONFIG_ACPI_DEBUG.  If this
+config option is not set, the debug messages are not even built into the kernel.
 
 Boot- and run-time configuration
 ================================
@@ -27,16 +26,16 @@ debug_layer (component)
 =======================
 
 The "debug_layer" is a mask that selects components of interest, e.g., a
-specific driver or part of the ACPI interpreter.  To build the debug_layer
-bitmask, look for the "#define _COMPONENT" in an ACPI source file.
+specific part of the ACPI interpreter.  To build the debug_layer bitmask, look
+for the "#define _COMPONENT" in an ACPI source file.
 
 You can set the debug_layer mask at boot-time using the acpi.debug_layer
 command line argument, and you can change it after boot by writing values
 to /sys/module/acpi/parameters/debug_layer.
 
-The possible components are defined in include/acpi/acoutput.h and
-include/acpi/acpi_drivers.h.  Reading /sys/module/acpi/parameters/debug_layer
-shows the supported mask values, currently these::
+The possible components are defined in include/acpi/acoutput.h.
+
+Reading /sys/module/acpi/parameters/debug_layer shows the supported mask values::
 
     ACPI_UTILITIES                  0x00000001
     ACPI_HARDWARE                   0x00000002
@@ -52,11 +51,6 @@ shows the supported mask values, currently these::
     ACPI_CA_DISASSEMBLER            0x00000800
     ACPI_COMPILER                   0x00001000
     ACPI_TOOLS                      0x00002000
-    ACPI_SBS_COMPONENT              0x00100000
-    ACPI_FAN_COMPONENT              0x00200000
-    ACPI_CONTAINER_COMPONENT        0x01000000
-    ACPI_SYSTEM_COMPONENT           0x02000000
-    ACPI_MEMORY_DEVICE_COMPONENT    0x08000000
 
 debug_level
 ===========

drivers/acpi/pci_link.c

@@ -256,8 +256,7 @@ static int acpi_pci_link_get_current(struct acpi_pci_link *link)
 	status = acpi_walk_resources(handle, METHOD_NAME__CRS,
 				     acpi_pci_link_check_current, &irq);
 	if (ACPI_FAILURE(status)) {
-		acpi_handle_warn(handle, "_CRS evaluation failed: %s\n",
-				 acpi_format_exception(status));
+		acpi_evaluation_failure_warn(handle, "_CRS", status);
 		result = -ENODEV;
 		goto end;
 	}
@@ -345,8 +344,7 @@ static int acpi_pci_link_set(struct acpi_pci_link *link, int irq)
 
 	/* check for total failure */
 	if (ACPI_FAILURE(status)) {
-		acpi_handle_warn(handle, "_SRS evaluation failed: %s",
-				 acpi_format_exception(status));
+		acpi_evaluation_failure_warn(handle, "_SRS", status);
 		result = -ENODEV;
 		goto end;
 	}

drivers/acpi/processor_perflib.c

@@ -67,9 +67,7 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
 		acpi_processor_ppc_in_use = true;
 
 		if (ACPI_FAILURE(status)) {
-			acpi_handle_warn(pr->handle,
-					 "_PPC evaluation failed: %s\n",
-					 acpi_format_exception(status));
+			acpi_evaluation_failure_warn(pr->handle, "_PPC", status);
 			return -ENODEV;
 		}
 	}
@@ -199,8 +197,7 @@ static int acpi_processor_get_performance_control(struct acpi_processor *pr)
 
 	status = acpi_evaluate_object(pr->handle, "_PCT", NULL, &buffer);
 	if (ACPI_FAILURE(status)) {
-		acpi_handle_warn(pr->handle, "_PCT evaluation failed: %s\n",
-				 acpi_format_exception(status));
+		acpi_evaluation_failure_warn(pr->handle, "_PCT", status);
 		return -ENODEV;
 	}
 
@@ -300,8 +297,7 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr)
 
 	status = acpi_evaluate_object(pr->handle, "_PSS", NULL, &buffer);
 	if (ACPI_FAILURE(status)) {
-		acpi_handle_warn(pr->handle, "_PSS evaluation failed: %s\n",
-				 acpi_format_exception(status));
+		acpi_evaluation_failure_warn(pr->handle, "_PSS", status);
 		return -ENODEV;
 	}
 

drivers/acpi/processor_throttling.c

@@ -281,9 +281,7 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
 	status = acpi_evaluate_integer(pr->handle, "_TPC", NULL, &tpc);
 	if (ACPI_FAILURE(status)) {
 		if (status != AE_NOT_FOUND)
-			acpi_handle_warn(pr->handle,
-					 "_TPC evaluation failed: %s\n",
-					 acpi_format_exception(status));
+			acpi_evaluation_failure_warn(pr->handle, "_TPC", status);
 
 		return -ENODEV;
 	}
@@ -416,9 +414,7 @@ static int acpi_processor_get_throttling_control(struct acpi_processor *pr)
 	status = acpi_evaluate_object(pr->handle, "_PTC", NULL, &buffer);
 	if (ACPI_FAILURE(status)) {
 		if (status != AE_NOT_FOUND)
-			acpi_handle_warn(pr->handle,
-					 "_PTC evaluation failed: %s\n",
-					 acpi_format_exception(status));
+			acpi_evaluation_failure_warn(pr->handle, "_PTC", status);
 
 		return -ENODEV;
 	}
@@ -503,9 +499,7 @@ static int acpi_processor_get_throttling_states(struct acpi_processor *pr)
 	status = acpi_evaluate_object(pr->handle, "_TSS", NULL, &buffer);
 	if (ACPI_FAILURE(status)) {
 		if (status != AE_NOT_FOUND)
-			acpi_handle_warn(pr->handle,
-					 "_TSS evaluation failed: %s\n",
-					 acpi_format_exception(status));
+			acpi_evaluation_failure_warn(pr->handle, "_TSS", status);
 
 		return -ENODEV;
 	}
@@ -586,9 +580,7 @@ static int acpi_processor_get_tsd(struct acpi_processor *pr)
 	status = acpi_evaluate_object(pr->handle, "_TSD", NULL, &buffer);
 	if (ACPI_FAILURE(status)) {
 		if (status != AE_NOT_FOUND)
-			acpi_handle_warn(pr->handle,
-					 "_TSD evaluation failed: %s\n",
-					 acpi_format_exception(status));
+			acpi_evaluation_failure_warn(pr->handle, "_TSD", status);
 
 		return -ENODEV;
 	}

drivers/acpi/sysfs.c

@@ -12,9 +12,6 @@
 
 #include "internal.h"
 
-#define _COMPONENT		ACPI_SYSTEM_COMPONENT
-ACPI_MODULE_NAME("sysfs");
-
 #ifdef CONFIG_ACPI_DEBUG
 /*
  * ACPI debug sysfs I/F, including:
@@ -51,12 +48,6 @@ static const struct acpi_dlayer acpi_debug_layers[] = {
 	ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
 	ACPI_DEBUG_INIT(ACPI_COMPILER),
 	ACPI_DEBUG_INIT(ACPI_TOOLS),
-
-	ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
-	ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
-	ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
-	ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
-	ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
 };
 
 static const struct acpi_dlevel acpi_debug_levels[] = {
@@ -650,8 +641,7 @@ static int get_status(u32 index, acpi_event_status *ret,
 	if (index < num_gpes) {
 		status = acpi_get_gpe_device(index, handle);
 		if (ACPI_FAILURE(status)) {
-			ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
-					"Invalid GPE 0x%x", index));
+			pr_warn("Invalid GPE 0x%x", index);
 			return -ENXIO;
 		}
 		status = acpi_get_gpe_status(*handle, index, ret);

drivers/acpi/utils.c

@@ -511,6 +511,20 @@ __acpi_handle_debug(struct _ddebug *descriptor, acpi_handle handle,
 EXPORT_SYMBOL(__acpi_handle_debug);
 #endif
 
+/**
+ * acpi_evaluation_failure_warn - Log evaluation failure warning.
+ * @handle: Parent object handle.
+ * @name: Name of the object whose evaluation has failed.
+ * @status: Status value returned by the failing object evaluation.
+ */
+void acpi_evaluation_failure_warn(acpi_handle handle, const char *name,
+				  acpi_status status)
+{
+	acpi_handle_warn(handle, "%s evaluation failed: %s\n", name,
+			 acpi_format_exception(status));
+}
+EXPORT_SYMBOL_GPL(acpi_evaluation_failure_warn);
+
 /**
  * acpi_has_method: Check whether @handle has a method named @name
  * @handle: ACPI device handle

drivers/hwmon/acpi_power_meter.c

@@ -20,7 +20,6 @@
 #include <linux/acpi.h>
 
 #define ACPI_POWER_METER_NAME		"power_meter"
-ACPI_MODULE_NAME(ACPI_POWER_METER_NAME);
 #define ACPI_POWER_METER_DEVICE_NAME	"Power Meter"
 #define ACPI_POWER_METER_CLASS		"pwr_meter_resource"
 
@@ -114,7 +113,8 @@ static int update_avg_interval(struct acpi_power_meter_resource *resource)
 	status = acpi_evaluate_integer(resource->acpi_dev->handle, "_GAI",
 				       NULL, &data);
 	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _GAI"));
+		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_GAI",
+					     status);
 		return -ENODEV;
 	}
 
@@ -166,7 +166,8 @@ static ssize_t set_avg_interval(struct device *dev,
 	mutex_unlock(&resource->lock);
 
 	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PAI"));
+		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_PAI",
+					     status);
 		return -EINVAL;
 	}
 
@@ -186,7 +187,8 @@ static int update_cap(struct acpi_power_meter_resource *resource)
 	status = acpi_evaluate_integer(resource->acpi_dev->handle, "_GHL",
 				       NULL, &data);
 	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _GHL"));
+		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_GHL",
+					     status);
 		return -ENODEV;
 	}
 
@@ -237,7 +239,8 @@ static ssize_t set_cap(struct device *dev, struct device_attribute *devattr,
 	mutex_unlock(&resource->lock);
 
 	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _SHL"));
+		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_SHL",
+					     status);
 		return -EINVAL;
 	}
 
@@ -270,7 +273,8 @@ static int set_acpi_trip(struct acpi_power_meter_resource *resource)
 	status = acpi_evaluate_integer(resource->acpi_dev->handle, "_PTP",
 				       &args, &data);
 	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PTP"));
+		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_PTP",
+					     status);
 		return -EINVAL;
 	}
 
@@ -322,7 +326,8 @@ static int update_meter(struct acpi_power_meter_resource *resource)
 	status = acpi_evaluate_integer(resource->acpi_dev->handle, "_PMM",
 				       NULL, &data);
 	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMM"));
+		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_PMM",
+					     status);
 		return -ENODEV;
 	}
 
@@ -549,7 +554,8 @@ static int read_domain_devices(struct acpi_power_meter_resource *resource)
 	status = acpi_evaluate_object(resource->acpi_dev->handle, "_PMD", NULL,
 				      &buffer);
 	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMD"));
+		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_PMD",
+					     status);
 		return -ENODEV;
 	}
 
@@ -745,7 +751,8 @@ static int read_capabilities(struct acpi_power_meter_resource *resource)
 	status = acpi_evaluate_object(resource->acpi_dev->handle, "_PMC", NULL,
 				      &buffer);
 	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMC"));
+		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_PMC",
+					     status);
 		return -ENODEV;
 	}
 
@@ -765,7 +772,9 @@ static int read_capabilities(struct acpi_power_meter_resource *resource)
 
 	status = acpi_extract_package(pss, &format, &state);
 	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Invalid data"));
+		dev_err(&resource->acpi_dev->dev, ACPI_POWER_METER_NAME
+			"_PMC package parsing failed: %s\n",
+			acpi_format_exception(status));
 		res = -EFAULT;
 		goto end;
 	}

drivers/iio/light/acpi-als.c

@@ -26,8 +26,6 @@
 #define ACPI_ALS_DEVICE_NAME		"acpi-als"
 #define ACPI_ALS_NOTIFY_ILLUMINANCE	0x80
 
-ACPI_MODULE_NAME("acpi-als");
-
 /*
  * So far, there's only one channel in here, but the specification for
  * ACPI0008 says there can be more to what the block can report. Like
@@ -91,7 +89,7 @@ static int acpi_als_read_value(struct acpi_als *als, char *prop, s32 *val)
 				       &temp_val);
 
 	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Error reading ALS %s", prop));
+		acpi_evaluation_failure_warn(als->device->handle, prop, status);
 		return -EIO;
 	}
 

include/acpi/acpi_drivers.h

@@ -11,16 +11,6 @@
 
 #define ACPI_MAX_STRING			80
 
-/*
- * Please update drivers/acpi/debug.c and Documentation/firmware-guide/acpi/debug.rst
- * if you add to this list.
- */
-#define ACPI_SBS_COMPONENT		0x00100000
-#define ACPI_FAN_COMPONENT		0x00200000
-#define ACPI_CONTAINER_COMPONENT	0x01000000
-#define ACPI_SYSTEM_COMPONENT		0x02000000
-#define ACPI_MEMORY_DEVICE_COMPONENT	0x08000000
-
 /*
  * _HID definitions
  * HIDs must conform to ACPI spec(6.1.4)

include/linux/acpi.h

@@ -1034,9 +1034,14 @@ static inline void acpi_ec_set_gpe_wake_mask(u8 action) {}
 __printf(3, 4)
 void acpi_handle_printk(const char *level, acpi_handle handle,
 			const char *fmt, ...);
+void acpi_evaluation_failure_warn(acpi_handle handle, const char *name,
+				  acpi_status status);
 #else	/* !CONFIG_ACPI */
 static inline __printf(3, 4) void
 acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {}
+static inline void acpi_evaluation_failure_warn(acpi_handle handle,
+						const char *name,
+						acpi_status status) {}
 #endif	/* !CONFIG_ACPI */
 
 #if defined(CONFIG_ACPI) && defined(CONFIG_DYNAMIC_DEBUG)