ACPI: introduce drivers/acpi/sysfs.c

Introduce drivers/acpi/sysfs.c.

code for ACPI sysfs I/F, including
#ifdef ACPI_DEBUG
/sys/module/acpi/parameters/debug_layer
/sys/module/acpi/parameters/debug_level
/sys/module/acpi/parameters/trace_method_name
/sys/module/acpi/parameters/trace_debug_layer
/sys/module/acpi/parameters/trace_debug_level
/sys/module/acpi/parameters/trace_state
#endif
/sys/module/acpi/parameters/acpica_version
/sys/firmware/acpi/tables/
/sys/firmware/acpi/interrupts/
is moved to this file.

No function change in this patch.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

6 files changed, 688 insertions, 571 deletions

diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 7891904..03a81a8 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -38,6 +38,7 @@ acpi-$(CONFIG_ACPI_DOCK)	+= dock.o
 acpi-y				+= pci_root.o pci_link.o pci_irq.o pci_bind.o
 acpi-y				+= power.o
 acpi-y				+= system.o event.o
+acpi-y				+= sysfs.o
 acpi-$(CONFIG_ACPI_DEBUG)	+= debug.o
 acpi-$(CONFIG_DEBUG_FS)		+= debugfs.o
 acpi-$(CONFIG_ACPI_NUMA)	+= numa.o
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 7136f24..bd9708b 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -1036,6 +1036,7 @@ static int __init acpi_init(void)
 	acpi_power_init();
 	acpi_system_init();
 	acpi_debug_init();
+	acpi_sysfs_init();
 	acpi_debugfs_init();
 	acpi_sleep_proc_init();
 	acpi_wakeup_device_init();
diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c
index 22476ea..f82240d 100644
--- a/drivers/acpi/debug.c
+++ b/drivers/acpi/debug.c
@@ -94,110 +94,6 @@ static const struct acpi_dlevel acpi_debug_levels[] = {
 };
 
 /* --------------------------------------------------------------------------
-                              FS Interface (/sys)
-   -------------------------------------------------------------------------- */
-static int param_get_debug_layer(char *buffer, struct kernel_param *kp) {
-	int result = 0;
-	int i;
-
-	result = sprintf(buffer, "%-25s\tHex        SET\n", "Description");
-
-	for(i = 0; i <ARRAY_SIZE(acpi_debug_layers); i++) {
-		result += sprintf(buffer+result, "%-25s\t0x%08lX [%c]\n",
-					acpi_debug_layers[i].name,
-					acpi_debug_layers[i].value,
-					(acpi_dbg_layer & acpi_debug_layers[i].value) ? '*' : ' ');
-	}
-	result += sprintf(buffer+result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
-					ACPI_ALL_DRIVERS,
-					(acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
-					ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer &
-					ACPI_ALL_DRIVERS) == 0 ? ' ' : '-');
-	result += sprintf(buffer+result, "--\ndebug_layer = 0x%08X ( * = enabled)\n", acpi_dbg_layer);
-
-	return result;
-}
-
-static int param_get_debug_level(char *buffer, struct kernel_param *kp) {
-	int result = 0;
-	int i;
-
-	result = sprintf(buffer, "%-25s\tHex        SET\n", "Description");
-
-	for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
-		result += sprintf(buffer+result, "%-25s\t0x%08lX [%c]\n",
-				     acpi_debug_levels[i].name,
-				     acpi_debug_levels[i].value,
-				     (acpi_dbg_level & acpi_debug_levels[i].
-				      value) ? '*' : ' ');
-	}
-	result += sprintf(buffer+result, "--\ndebug_level = 0x%08X (* = enabled)\n",
-			     acpi_dbg_level);
-
-	return result;
-}
-
-module_param_call(debug_layer, param_set_uint, param_get_debug_layer, &acpi_dbg_layer, 0644);
-module_param_call(debug_level, param_set_uint, param_get_debug_level, &acpi_dbg_level, 0644);
-
-static char trace_method_name[6];
-module_param_string(trace_method_name, trace_method_name, 6, 0644);
-static unsigned int trace_debug_layer;
-module_param(trace_debug_layer, uint, 0644);
-static unsigned int trace_debug_level;
-module_param(trace_debug_level, uint, 0644);
-
-static int param_set_trace_state(const char *val, struct kernel_param *kp)
-{
-	int result = 0;
-
-	if (!strncmp(val, "enable", strlen("enable") - 1)) {
-		result = acpi_debug_trace(trace_method_name, trace_debug_level,
-					  trace_debug_layer, 0);
-		if (result)
-			result = -EBUSY;
-		goto exit;
-	}
-
-	if (!strncmp(val, "disable", strlen("disable") - 1)) {
-		int name = 0;
-		result = acpi_debug_trace((char *)&name, trace_debug_level,
-					  trace_debug_layer, 0);
-		if (result)
-			result = -EBUSY;
-		goto exit;
-	}
-
-	if (!strncmp(val, "1", 1)) {
-		result = acpi_debug_trace(trace_method_name, trace_debug_level,
-					  trace_debug_layer, 1);
-		if (result)
-			result = -EBUSY;
-		goto exit;
-	}
-
-	result = -EINVAL;
-exit:
-	return result;
-}
-
-static int param_get_trace_state(char *buffer, struct kernel_param *kp)
-{
-	if (!acpi_gbl_trace_method_name)
-		return sprintf(buffer, "disable");
-	else {
-		if (acpi_gbl_trace_flags & 1)
-			return sprintf(buffer, "1");
-		else
-			return sprintf(buffer, "enable");
-	}
-	return 0;
-}
-
-module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
-		  NULL, 0644);
-
-/* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
 #ifdef CONFIG_ACPI_PROCFS
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 0650e34..eed8234 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -23,6 +23,7 @@
 int init_acpi_device_notify(void);
 int acpi_scan_init(void);
 int acpi_system_init(void);
+int acpi_sysfs_init(void);
 
 #ifdef CONFIG_ACPI_DEBUG
 int acpi_debug_init(void);
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
new file mode 100644
index 0000000..68e2e45
--- /dev/null
+++ b/drivers/acpi/sysfs.c
@@ -0,0 +1,685 @@
+/*
+ * sysfs.c - ACPI sysfs interface to userspace.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/moduleparam.h>
+#include <acpi/acpi_drivers.h>
+
+#define _COMPONENT		ACPI_SYSTEM_COMPONENT
+ACPI_MODULE_NAME("sysfs");
+
+#define PREFIX "ACPI: "
+
+#ifdef CONFIG_ACPI_DEBUG
+/*
+ * ACPI debug sysfs I/F, including:
+ * /sys/modules/acpi/parameters/debug_layer
+ * /sys/modules/acpi/parameters/debug_level
+ * /sys/modules/acpi/parameters/trace_method_name
+ * /sys/modules/acpi/parameters/trace_state
+ * /sys/modules/acpi/parameters/trace_debug_layer
+ * /sys/modules/acpi/parameters/trace_debug_level
+ */
+
+struct acpi_dlayer {
+	const char *name;
+	unsigned long value;
+};
+struct acpi_dlevel {
+	const char *name;
+	unsigned long value;
+};
+#define ACPI_DEBUG_INIT(v)	{ .name = #v, .value = v }
+
+static const struct acpi_dlayer acpi_debug_layers[] = {
+	ACPI_DEBUG_INIT(ACPI_UTILITIES),
+	ACPI_DEBUG_INIT(ACPI_HARDWARE),
+	ACPI_DEBUG_INIT(ACPI_EVENTS),
+	ACPI_DEBUG_INIT(ACPI_TABLES),
+	ACPI_DEBUG_INIT(ACPI_NAMESPACE),
+	ACPI_DEBUG_INIT(ACPI_PARSER),
+	ACPI_DEBUG_INIT(ACPI_DISPATCHER),
+	ACPI_DEBUG_INIT(ACPI_EXECUTER),
+	ACPI_DEBUG_INIT(ACPI_RESOURCES),
+	ACPI_DEBUG_INIT(ACPI_CA_DEBUGGER),
+	ACPI_DEBUG_INIT(ACPI_OS_SERVICES),
+	ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
+	ACPI_DEBUG_INIT(ACPI_COMPILER),
+	ACPI_DEBUG_INIT(ACPI_TOOLS),
+
+	ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT),
+	ACPI_DEBUG_INIT(ACPI_AC_COMPONENT),
+	ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
+	ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
+	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),
+	ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
+	ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT),
+	ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT),
+};
+
+static const struct acpi_dlevel acpi_debug_levels[] = {
+	ACPI_DEBUG_INIT(ACPI_LV_INIT),
+	ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT),
+	ACPI_DEBUG_INIT(ACPI_LV_INFO),
+
+	ACPI_DEBUG_INIT(ACPI_LV_INIT_NAMES),
+	ACPI_DEBUG_INIT(ACPI_LV_PARSE),
+	ACPI_DEBUG_INIT(ACPI_LV_LOAD),
+	ACPI_DEBUG_INIT(ACPI_LV_DISPATCH),
+	ACPI_DEBUG_INIT(ACPI_LV_EXEC),
+	ACPI_DEBUG_INIT(ACPI_LV_NAMES),
+	ACPI_DEBUG_INIT(ACPI_LV_OPREGION),
+	ACPI_DEBUG_INIT(ACPI_LV_BFIELD),
+	ACPI_DEBUG_INIT(ACPI_LV_TABLES),
+	ACPI_DEBUG_INIT(ACPI_LV_VALUES),
+	ACPI_DEBUG_INIT(ACPI_LV_OBJECTS),
+	ACPI_DEBUG_INIT(ACPI_LV_RESOURCES),
+	ACPI_DEBUG_INIT(ACPI_LV_USER_REQUESTS),
+	ACPI_DEBUG_INIT(ACPI_LV_PACKAGE),
+
+	ACPI_DEBUG_INIT(ACPI_LV_ALLOCATIONS),
+	ACPI_DEBUG_INIT(ACPI_LV_FUNCTIONS),
+	ACPI_DEBUG_INIT(ACPI_LV_OPTIMIZATIONS),
+
+	ACPI_DEBUG_INIT(ACPI_LV_MUTEX),
+	ACPI_DEBUG_INIT(ACPI_LV_THREADS),
+	ACPI_DEBUG_INIT(ACPI_LV_IO),
+	ACPI_DEBUG_INIT(ACPI_LV_INTERRUPTS),
+
+	ACPI_DEBUG_INIT(ACPI_LV_AML_DISASSEMBLE),
+	ACPI_DEBUG_INIT(ACPI_LV_VERBOSE_INFO),
+	ACPI_DEBUG_INIT(ACPI_LV_FULL_TABLES),
+	ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
+};
+
+static int param_get_debug_layer(char *buffer, struct kernel_param *kp)
+{
+	int result = 0;
+	int i;
+
+	result = sprintf(buffer, "%-25s\tHex        SET\n", "Description");
+
+	for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) {
+		result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
+				  acpi_debug_layers[i].name,
+				  acpi_debug_layers[i].value,
+				  (acpi_dbg_layer & acpi_debug_layers[i].value)
+				  ? '*' : ' ');
+	}
+	result +=
+	    sprintf(buffer + result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
+		    ACPI_ALL_DRIVERS,
+		    (acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
+		    ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer & ACPI_ALL_DRIVERS)
+		    == 0 ? ' ' : '-');
+	result +=
+	    sprintf(buffer + result,
+		    "--\ndebug_layer = 0x%08X ( * = enabled)\n",
+		    acpi_dbg_layer);
+
+	return result;
+}
+
+static int param_get_debug_level(char *buffer, struct kernel_param *kp)
+{
+	int result = 0;
+	int i;
+
+	result = sprintf(buffer, "%-25s\tHex        SET\n", "Description");
+
+	for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
+		result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
+				  acpi_debug_levels[i].name,
+				  acpi_debug_levels[i].value,
+				  (acpi_dbg_level & acpi_debug_levels[i].value)
+				  ? '*' : ' ');
+	}
+	result +=
+	    sprintf(buffer + result, "--\ndebug_level = 0x%08X (* = enabled)\n",
+		    acpi_dbg_level);
+
+	return result;
+}
+
+module_param_call(debug_layer, param_set_uint, param_get_debug_layer,
+		  &acpi_dbg_layer, 0644);
+module_param_call(debug_level, param_set_uint, param_get_debug_level,
+		  &acpi_dbg_level, 0644);
+
+static char trace_method_name[6];
+module_param_string(trace_method_name, trace_method_name, 6, 0644);
+static unsigned int trace_debug_layer;
+module_param(trace_debug_layer, uint, 0644);
+static unsigned int trace_debug_level;
+module_param(trace_debug_level, uint, 0644);
+
+static int param_set_trace_state(const char *val, struct kernel_param *kp)
+{
+	int result = 0;
+
+	if (!strncmp(val, "enable", strlen("enable") - 1)) {
+		result = acpi_debug_trace(trace_method_name, trace_debug_level,
+					  trace_debug_layer, 0);
+		if (result)
+			result = -EBUSY;
+		goto exit;
+	}
+
+	if (!strncmp(val, "disable", strlen("disable") - 1)) {
+		int name = 0;
+		result = acpi_debug_trace((char *)&name, trace_debug_level,
+					  trace_debug_layer, 0);
+		if (result)
+			result = -EBUSY;
+		goto exit;
+	}
+
+	if (!strncmp(val, "1", 1)) {
+		result = acpi_debug_trace(trace_method_name, trace_debug_level,
+					  trace_debug_layer, 1);
+		if (result)
+			result = -EBUSY;
+		goto exit;
+	}
+
+	result = -EINVAL;
+exit:
+	return result;
+}
+
+static int param_get_trace_state(char *buffer, struct kernel_param *kp)
+{
+	if (!acpi_gbl_trace_method_name)
+		return sprintf(buffer, "disable");
+	else {
+		if (acpi_gbl_trace_flags & 1)
+			return sprintf(buffer, "1");
+		else
+			return sprintf(buffer, "enable");
+	}
+	return 0;
+}
+
+module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
+		  NULL, 0644);
+#endif /* CONFIG_ACPI_DEBUG */
+
+/* /sys/module/acpi/parameters/acpica_version */
+static int param_get_acpica_version(char *buffer, struct kernel_param *kp)
+{
+	int result;
+
+	result = sprintf(buffer, "%x", ACPI_CA_VERSION);
+
+	return result;
+}
+
+module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
+
+/*
+ * ACPI table sysfs I/F:
+ * /sys/firmware/acpi/tables/
+ * /sys/firmware/acpi/tables/dynamic/
+ */
+
+static LIST_HEAD(acpi_table_attr_list);
+static struct kobject *tables_kobj;
+static struct kobject *dynamic_tables_kobj;
+
+struct acpi_table_attr {
+	struct bin_attribute attr;
+	char name[8];
+	int instance;
+	struct list_head node;
+};
+
+static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
+			       struct bin_attribute *bin_attr, char *buf,
+			       loff_t offset, size_t count)
+{
+	struct acpi_table_attr *table_attr =
+	    container_of(bin_attr, struct acpi_table_attr, attr);
+	struct acpi_table_header *table_header = NULL;
+	acpi_status status;
+	char name[ACPI_NAME_SIZE];
+
+	if (strncmp(table_attr->name, "NULL", 4))
+		memcpy(name, table_attr->name, ACPI_NAME_SIZE);
+	else
+		memcpy(name, "\0\0\0\0", 4);
+
+	status = acpi_get_table(name, table_attr->instance, &table_header);
+	if (ACPI_FAILURE(status))
+		return -ENODEV;
+
+	return memory_read_from_buffer(buf, count, &offset,
+				       table_header, table_header->length);
+}
+
+static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
+				 struct acpi_table_header *table_header)
+{
+	struct acpi_table_header *header = NULL;
+	struct acpi_table_attr *attr = NULL;
+
+	sysfs_attr_init(&table_attr->attr.attr);
+	if (table_header->signature[0] != '\0')
+		memcpy(table_attr->name, table_header->signature,
+		       ACPI_NAME_SIZE);
+	else
+		memcpy(table_attr->name, "NULL", 4);
+
+	list_for_each_entry(attr, &acpi_table_attr_list, node) {
+		if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE))
+			if (table_attr->instance < attr->instance)
+				table_attr->instance = attr->instance;
+	}
+	table_attr->instance++;
+
+	if (table_attr->instance > 1 || (table_attr->instance == 1 &&
+					 !acpi_get_table
+					 (table_header->signature, 2, &header)))
+		sprintf(table_attr->name + ACPI_NAME_SIZE, "%d",
+			table_attr->instance);
+
+	table_attr->attr.size = 0;
+	table_attr->attr.read = acpi_table_show;
+	table_attr->attr.attr.name = table_attr->name;
+	table_attr->attr.attr.mode = 0400;
+
+	return;
+}
+
+static acpi_status
+acpi_sysfs_table_handler(u32 event, void *table, void *context)
+{
+	struct acpi_table_attr *table_attr;
+
+	switch (event) {
+	case ACPI_TABLE_EVENT_LOAD:
+		table_attr =
+		    kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
+		if (!table_attr)
+			return AE_NO_MEMORY;
+
+		acpi_table_attr_init(table_attr, table);
+		if (sysfs_create_bin_file(dynamic_tables_kobj,
+					  &table_attr->attr)) {
+			kfree(table_attr);
+			return AE_ERROR;
+		} else
+			list_add_tail(&table_attr->node, &acpi_table_attr_list);
+		break;
+	case ACPI_TABLE_EVENT_UNLOAD:
+		/*
+		 * we do not need to do anything right now
+		 * because the table is not deleted from the
+		 * global table list when unloading it.
+		 */
+		break;
+	default:
+		return AE_BAD_PARAMETER;
+	}
+	return AE_OK;
+}
+
+static int acpi_tables_sysfs_init(void)
+{
+	struct acpi_table_attr *table_attr;
+	struct acpi_table_header *table_header = NULL;
+	int table_index = 0;
+	int result;
+
+	tables_kobj = kobject_create_and_add("tables", acpi_kobj);
+	if (!tables_kobj)
+		goto err;
+
+	dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
+	if (!dynamic_tables_kobj)
+		goto err_dynamic_tables;
+
+	do {
+		result = acpi_get_table_by_index(table_index, &table_header);
+		if (!result) {
+			table_index++;
+			table_attr = NULL;
+			table_attr =
+			    kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
+			if (!table_attr)
+				return -ENOMEM;
+
+			acpi_table_attr_init(table_attr, table_header);
+			result =
+			    sysfs_create_bin_file(tables_kobj,
+						  &table_attr->attr);
+			if (result) {
+				kfree(table_attr);
+				return result;
+			} else
+				list_add_tail(&table_attr->node,
+					      &acpi_table_attr_list);
+		}
+	} while (!result);
+	kobject_uevent(tables_kobj, KOBJ_ADD);
+	kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
+	result = acpi_install_table_handler(acpi_sysfs_table_handler, NULL);
+
+	return result == AE_OK ? 0 : -EINVAL;
+err_dynamic_tables:
+	kobject_put(tables_kobj);
+err:
+	return -ENOMEM;
+}
+
+/*
+ * Detailed ACPI IRQ counters:
+ * /sys/firmware/acpi/interrupts/
+ */
+
+u32 acpi_irq_handled;
+u32 acpi_irq_not_handled;
+
+#define COUNT_GPE 0
+#define COUNT_SCI 1		/* acpi_irq_handled */
+#define COUNT_SCI_NOT 2		/* acpi_irq_not_handled */
+#define COUNT_ERROR 3		/* other */
+#define NUM_COUNTERS_EXTRA 4
+
+struct event_counter {
+	u32 count;
+	u32 flags;
+};
+
+static struct event_counter *all_counters;
+static u32 num_gpes;
+static u32 num_counters;
+static struct attribute **all_attrs;
+static u32 acpi_gpe_count;
+
+static struct attribute_group interrupt_stats_attr_group = {
+	.name = "interrupts",
+};
+
+static struct kobj_attribute *counter_attrs;
+
+static void delete_gpe_attr_array(void)
+{
+	struct event_counter *tmp = all_counters;
+
+	all_counters = NULL;
+	kfree(tmp);
+
+	if (counter_attrs) {
+		int i;
+
+		for (i = 0; i < num_gpes; i++)
+			kfree(counter_attrs[i].attr.name);
+
+		kfree(counter_attrs);
+	}
+	kfree(all_attrs);
+
+	return;
+}
+
+void acpi_os_gpe_count(u32 gpe_number)
+{
+	acpi_gpe_count++;
+
+	if (!all_counters)
+		return;
+
+	if (gpe_number < num_gpes)
+		all_counters[gpe_number].count++;
+	else
+		all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
+			     COUNT_ERROR].count++;
+
+	return;
+}
+
+void acpi_os_fixed_event_count(u32 event_number)
+{
+	if (!all_counters)
+		return;
+
+	if (event_number < ACPI_NUM_FIXED_EVENTS)
+		all_counters[num_gpes + event_number].count++;
+	else
+		all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
+			     COUNT_ERROR].count++;
+
+	return;
+}
+
+static int get_status(u32 index, acpi_event_status *status,
+		      acpi_handle *handle)
+{
+	int result = 0;
+
+	if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
+		goto end;
+
+	if (index < num_gpes) {
+		result = acpi_get_gpe_device(index, handle);
+		if (result) {
+			ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
+					"Invalid GPE 0x%x\n", index));
+			goto end;
+		}
+		result = acpi_get_gpe_status(*handle, index, status);
+	} else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
+		result = acpi_get_event_status(index - num_gpes, status);
+
+end:
+	return result;
+}
+
+static ssize_t counter_show(struct kobject *kobj,
+			    struct kobj_attribute *attr, char *buf)
+{
+	int index = attr - counter_attrs;
+	int size;
+	acpi_handle handle;
+	acpi_event_status status;
+	int result = 0;
+
+	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
+	    acpi_irq_handled;
+	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
+	    acpi_irq_not_handled;
+	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
+	    acpi_gpe_count;
+	size = sprintf(buf, "%8d", all_counters[index].count);
+
+	/* "gpe_all" or "sci" */
+	if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
+		goto end;
+
+	result = get_status(index, &status, &handle);
+	if (result)
+		goto end;
+
+	if (!(status & ACPI_EVENT_FLAG_HANDLE))
+		size += sprintf(buf + size, "   invalid");
+	else if (status & ACPI_EVENT_FLAG_ENABLED)
+		size += sprintf(buf + size, "   enabled");
+	else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
+		size += sprintf(buf + size, "   wake_enabled");
+	else
+		size += sprintf(buf + size, "   disabled");
+
+end:
+	size += sprintf(buf + size, "\n");
+	return result ? result : size;
+}
+
+/*
+ * counter_set() sets the specified counter.
+ * setting the total "sci" file to any value clears all counters.
+ * enable/disable/clear a gpe/fixed event in user space.
+ */
+static ssize_t counter_set(struct kobject *kobj,
+			   struct kobj_attribute *attr, const char *buf,
+			   size_t size)
+{
+	int index = attr - counter_attrs;
+	acpi_event_status status;
+	acpi_handle handle;
+	int result = 0;
+
+	if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
+		int i;
+		for (i = 0; i < num_counters; ++i)
+			all_counters[i].count = 0;
+		acpi_gpe_count = 0;
+		acpi_irq_handled = 0;
+		acpi_irq_not_handled = 0;
+		goto end;
+	}
+
+	/* show the event status for both GPEs and Fixed Events */
+	result = get_status(index, &status, &handle);
+	if (result)
+		goto end;
+
+	if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
+		printk(KERN_WARNING PREFIX
+		       "Can not change Invalid GPE/Fixed Event status\n");
+		return -EINVAL;
+	}
+
+	if (index < num_gpes) {
+		if (!strcmp(buf, "disable\n") &&
+		    (status & ACPI_EVENT_FLAG_ENABLED))
+			result = acpi_disable_gpe(handle, index);
+		else if (!strcmp(buf, "enable\n") &&
+			 !(status & ACPI_EVENT_FLAG_ENABLED))
+			result = acpi_enable_gpe(handle, index);
+		else if (!strcmp(buf, "clear\n") &&
+			 (status & ACPI_EVENT_FLAG_SET))
+			result = acpi_clear_gpe(handle, index);
+		else
+			all_counters[index].count = strtoul(buf, NULL, 0);
+	} else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
+		int event = index - num_gpes;
+		if (!strcmp(buf, "disable\n") &&
+		    (status & ACPI_EVENT_FLAG_ENABLED))
+			result = acpi_disable_event(event, ACPI_NOT_ISR);
+		else if (!strcmp(buf, "enable\n") &&
+			 !(status & ACPI_EVENT_FLAG_ENABLED))
+			result = acpi_enable_event(event, ACPI_NOT_ISR);
+		else if (!strcmp(buf, "clear\n") &&
+			 (status & ACPI_EVENT_FLAG_SET))
+			result = acpi_clear_event(event);
+		else
+			all_counters[index].count = strtoul(buf, NULL, 0);
+	} else
+		all_counters[index].count = strtoul(buf, NULL, 0);
+
+	if (ACPI_FAILURE(result))
+		result = -EINVAL;
+end:
+	return result ? result : size;
+}
+
+void acpi_irq_stats_init(void)
+{
+	int i;
+
+	if (all_counters)
+		return;
+
+	num_gpes = acpi_current_gpe_count;
+	num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
+
+	all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
+			    GFP_KERNEL);
+	if (all_attrs == NULL)
+		return;
+
+	all_counters = kzalloc(sizeof(struct event_counter) * (num_counters),
+			       GFP_KERNEL);
+	if (all_counters == NULL)
+		goto fail;
+
+	counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
+				GFP_KERNEL);
+	if (counter_attrs == NULL)
+		goto fail;
+
+	for (i = 0; i < num_counters; ++i) {
+		char buffer[12];
+		char *name;
+
+		if (i < num_gpes)
+			sprintf(buffer, "gpe%02X", i);
+		else if (i == num_gpes + ACPI_EVENT_PMTIMER)
+			sprintf(buffer, "ff_pmtimer");
+		else if (i == num_gpes + ACPI_EVENT_GLOBAL)
+			sprintf(buffer, "ff_gbl_lock");
+		else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
+			sprintf(buffer, "ff_pwr_btn");
+		else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
+			sprintf(buffer, "ff_slp_btn");
+		else if (i == num_gpes + ACPI_EVENT_RTC)
+			sprintf(buffer, "ff_rt_clk");
+		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
+			sprintf(buffer, "gpe_all");
+		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
+			sprintf(buffer, "sci");
+		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
+			sprintf(buffer, "sci_not");
+		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
+			sprintf(buffer, "error");
+		else
+			sprintf(buffer, "bug%02X", i);
+
+		name = kzalloc(strlen(buffer) + 1, GFP_KERNEL);
+		if (name == NULL)
+			goto fail;
+		strncpy(name, buffer, strlen(buffer) + 1);
+
+		sysfs_attr_init(&counter_attrs[i].attr);
+		counter_attrs[i].attr.name = name;
+		counter_attrs[i].attr.mode = 0644;
+		counter_attrs[i].show = counter_show;
+		counter_attrs[i].store = counter_set;
+
+		all_attrs[i] = &counter_attrs[i].attr;
+	}
+
+	interrupt_stats_attr_group.attrs = all_attrs;
+	if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
+		return;
+
+fail:
+	delete_gpe_attr_array();
+	return;
+}
+
+static void __exit interrupt_stats_exit(void)
+{
+	sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
+
+	delete_gpe_attr_array();
+
+	return;
+}
+
+int __init acpi_sysfs_init(void)
+{
+	int result;
+
+	result = acpi_tables_sysfs_init();
+
+	return result;
+}
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 5981bd0..d70481f 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -40,469 +40,6 @@ ACPI_MODULE_NAME("system");
 #define ACPI_SYSTEM_CLASS		"system"
 #define ACPI_SYSTEM_DEVICE_NAME		"System"
 
-u32 acpi_irq_handled;
-u32 acpi_irq_not_handled;
-
-/*
- * Make ACPICA version work as module param
- */
-static int param_get_acpica_version(char *buffer, struct kernel_param *kp)
-{
-	int result;
-
-	result = sprintf(buffer, "%x", ACPI_CA_VERSION);
-
-	return result;
-}
-
-module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
-
-/* --------------------------------------------------------------------------
-                              FS Interface (/sys)
-   -------------------------------------------------------------------------- */
-static LIST_HEAD(acpi_table_attr_list);
-static struct kobject *tables_kobj;
-static struct kobject *dynamic_tables_kobj;
-
-struct acpi_table_attr {
-	struct bin_attribute attr;
-	char name[8];
-	int instance;
-	struct list_head node;
-};
-
-static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
-			       struct bin_attribute *bin_attr, char *buf,
-			       loff_t offset, size_t count)
-{
-	struct acpi_table_attr *table_attr =
-	    container_of(bin_attr, struct acpi_table_attr, attr);
-	struct acpi_table_header *table_header = NULL;
-	acpi_status status;
-	char name[ACPI_NAME_SIZE];
-
-	if (strncmp(table_attr->name, "NULL", 4))
-		memcpy(name, table_attr->name, ACPI_NAME_SIZE);
-	else
-		memcpy(name, "\0\0\0\0", 4);
-
-	status =
-	    acpi_get_table(name, table_attr->instance,
-			   &table_header);
-	if (ACPI_FAILURE(status))
-		return -ENODEV;
-
-	return memory_read_from_buffer(buf, count, &offset,
-					table_header, table_header->length);
-}
-
-static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
-				 struct acpi_table_header *table_header)
-{
-	struct acpi_table_header *header = NULL;
-	struct acpi_table_attr *attr = NULL;
-
-	sysfs_attr_init(&table_attr->attr.attr);
-	if (table_header->signature[0] != '\0')
-		memcpy(table_attr->name, table_header->signature,
-			ACPI_NAME_SIZE);
-	else
-		memcpy(table_attr->name, "NULL", 4);
-
-	list_for_each_entry(attr, &acpi_table_attr_list, node) {
-		if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE))
-			if (table_attr->instance < attr->instance)
-				table_attr->instance = attr->instance;
-	}
-	table_attr->instance++;
-
-	if (table_attr->instance > 1 || (table_attr->instance == 1 &&
-					!acpi_get_table
-					(table_header->signature, 2, &header)))
-		sprintf(table_attr->name + ACPI_NAME_SIZE, "%d",
-			table_attr->instance);
-
-	table_attr->attr.size = 0;
-	table_attr->attr.read = acpi_table_show;
-	table_attr->attr.attr.name = table_attr->name;
-	table_attr->attr.attr.mode = 0400;
-
-	return;
-}
-
-static acpi_status
-acpi_sysfs_table_handler(u32 event, void *table, void *context)
-{
-	struct acpi_table_attr *table_attr;
-
-	switch (event) {
-	case ACPI_TABLE_EVENT_LOAD:
-		table_attr =
-			kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
-		if (!table_attr)
-			return AE_NO_MEMORY;
-
-		acpi_table_attr_init(table_attr, table);
-		if (sysfs_create_bin_file(dynamic_tables_kobj,
-					&table_attr->attr)) {
-			kfree(table_attr);
-			return AE_ERROR;
-		} else
-			list_add_tail(&table_attr->node,
-					&acpi_table_attr_list);
-		break;
-	case ACPI_TABLE_EVENT_UNLOAD:
-		/*
-		 * we do not need to do anything right now
-		 * because the table is not deleted from the
-		 * global table list when unloading it.
-		 */
-		break;
-	default:
-		return AE_BAD_PARAMETER;
-	}
-	return AE_OK;
-}
-
-static int acpi_system_sysfs_init(void)
-{
-	struct acpi_table_attr *table_attr;
-	struct acpi_table_header *table_header = NULL;
-	int table_index = 0;
-	int result;
-
-	tables_kobj = kobject_create_and_add("tables", acpi_kobj);
-	if (!tables_kobj)
-		goto err;
-
-	dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
-	if (!dynamic_tables_kobj)
-		goto err_dynamic_tables;
-
-	do {
-		result = acpi_get_table_by_index(table_index, &table_header);
-		if (!result) {
-			table_index++;
-			table_attr = NULL;
-			table_attr =
-			    kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
-			if (!table_attr)
-				return -ENOMEM;
-
-			acpi_table_attr_init(table_attr, table_header);
-			result =
-			    sysfs_create_bin_file(tables_kobj,
-						  &table_attr->attr);
-			if (result) {
-				kfree(table_attr);
-				return result;
-			} else
-				list_add_tail(&table_attr->node,
-					      &acpi_table_attr_list);
-		}
-	} while (!result);
-	kobject_uevent(tables_kobj, KOBJ_ADD);
-	kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
-	result = acpi_install_table_handler(acpi_sysfs_table_handler, NULL);
-
-	return result == AE_OK ? 0 : -EINVAL;
-err_dynamic_tables:
-	kobject_put(tables_kobj);
-err:
-	return -ENOMEM;
-}
-
-/*
- * Detailed ACPI IRQ counters in /sys/firmware/acpi/interrupts/
- * See Documentation/ABI/testing/sysfs-firmware-acpi
- */
-
-#define COUNT_GPE 0
-#define COUNT_SCI 1	/* acpi_irq_handled */
-#define COUNT_SCI_NOT 2	/* acpi_irq_not_handled */
-#define COUNT_ERROR 3	/* other */
-#define NUM_COUNTERS_EXTRA 4
-
-struct event_counter {
-	u32 count;
-	u32 flags;
-};
-
-static struct event_counter *all_counters;
-static u32 num_gpes;
-static u32 num_counters;
-static struct attribute **all_attrs;
-static u32 acpi_gpe_count;
-
-static struct attribute_group interrupt_stats_attr_group = {
-	.name = "interrupts",
-};
-static struct kobj_attribute *counter_attrs;
-
-static void delete_gpe_attr_array(void)
-{
-	struct event_counter *tmp = all_counters;
-
-	all_counters = NULL;
-	kfree(tmp);
-
-	if (counter_attrs) {
-		int i;
-
-		for (i = 0; i < num_gpes; i++)
-			kfree(counter_attrs[i].attr.name);
-
-		kfree(counter_attrs);
-	}
-	kfree(all_attrs);
-
-	return;
-}
-
-void acpi_os_gpe_count(u32 gpe_number)
-{
-	acpi_gpe_count++;
-
-	if (!all_counters)
-		return;
-
-	if (gpe_number < num_gpes)
-		all_counters[gpe_number].count++;
-	else
-		all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR].
-					count++;
-
-	return;
-}
-
-void acpi_os_fixed_event_count(u32 event_number)
-{
-	if (!all_counters)
-		return;
-
-	if (event_number < ACPI_NUM_FIXED_EVENTS)
-		all_counters[num_gpes + event_number].count++;
-	else
-		all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR].
-				count++;
-
-	return;
-}
-
-static int get_status(u32 index, acpi_event_status *status, acpi_handle *handle)
-{
-	int result = 0;
-
-	if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
-		goto end;
-
-	if (index < num_gpes) {
-		result = acpi_get_gpe_device(index, handle);
-		if (result) {
-			ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
-				"Invalid GPE 0x%x\n", index));
-			goto end;
-		}
-		result = acpi_get_gpe_status(*handle, index, status);
-	} else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
-		result = acpi_get_event_status(index - num_gpes, status);
-
-end:
-	return result;
-}
-
-static ssize_t counter_show(struct kobject *kobj,
-	struct kobj_attribute *attr, char *buf)
-{
-	int index = attr - counter_attrs;
-	int size;
-	acpi_handle handle;
-	acpi_event_status status;
-	int result = 0;
-
-	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
-		acpi_irq_handled;
-	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
-		acpi_irq_not_handled;
-	all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
-		acpi_gpe_count;
-
-	size = sprintf(buf, "%8d", all_counters[index].count);
-
-	/* "gpe_all" or "sci" */
-	if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
-		goto end;
-
-	result = get_status(index, &status, &handle);
-	if (result)
-		goto end;
-
-	if (!(status & ACPI_EVENT_FLAG_HANDLE))
-		size += sprintf(buf + size, "	invalid");
-	else if (status & ACPI_EVENT_FLAG_ENABLED)
-		size += sprintf(buf + size, "	enabled");
-	else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
-		size += sprintf(buf + size, "	wake_enabled");
-	else
-		size += sprintf(buf + size, "	disabled");
-
-end:
-	size += sprintf(buf + size, "\n");
-	return result ? result : size;
-}
-
-/*
- * counter_set() sets the specified counter.
- * setting the total "sci" file to any value clears all counters.
- * enable/disable/clear a gpe/fixed event in user space.
- */
-static ssize_t counter_set(struct kobject *kobj,
-	struct kobj_attribute *attr, const char *buf, size_t size)
-{
-	int index = attr - counter_attrs;
-	acpi_event_status status;
-	acpi_handle handle;
-	int result = 0;
-
-	if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
-		int i;
-		for (i = 0; i < num_counters; ++i)
-			all_counters[i].count = 0;
-		acpi_gpe_count = 0;
-		acpi_irq_handled = 0;
-		acpi_irq_not_handled = 0;
-		goto end;
-	}
-
-	/* show the event status for both GPEs and Fixed Events */
-	result = get_status(index, &status, &handle);
-	if (result)
-		goto end;
-
-	if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
-		printk(KERN_WARNING PREFIX
-			"Can not change Invalid GPE/Fixed Event status\n");
-		return -EINVAL;
-	}
-
-	if (index < num_gpes) {
-		if (!strcmp(buf, "disable\n") &&
-				(status & ACPI_EVENT_FLAG_ENABLED))
-			result = acpi_disable_gpe(handle, index);
-		else if (!strcmp(buf, "enable\n") &&
-				!(status & ACPI_EVENT_FLAG_ENABLED))
-			result = acpi_enable_gpe(handle, index);
-		else if (!strcmp(buf, "clear\n") &&
-				(status & ACPI_EVENT_FLAG_SET))
-			result = acpi_clear_gpe(handle, index);
-		else
-			all_counters[index].count = strtoul(buf, NULL, 0);
-	} else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
-		int event = index - num_gpes;
-		if (!strcmp(buf, "disable\n") &&
-				(status & ACPI_EVENT_FLAG_ENABLED))
-			result = acpi_disable_event(event, ACPI_NOT_ISR);
-		else if (!strcmp(buf, "enable\n") &&
-				!(status & ACPI_EVENT_FLAG_ENABLED))
-			result = acpi_enable_event(event, ACPI_NOT_ISR);
-		else if (!strcmp(buf, "clear\n") &&
-				(status & ACPI_EVENT_FLAG_SET))
-			result = acpi_clear_event(event);
-		else
-			all_counters[index].count = strtoul(buf, NULL, 0);
-	} else
-		all_counters[index].count = strtoul(buf, NULL, 0);
-
-	if (ACPI_FAILURE(result))
-		result = -EINVAL;
-end:
-	return result ? result : size;
-}
-
-void acpi_irq_stats_init(void)
-{
-	int i;
-
-	if (all_counters)
-		return;
-
-	num_gpes = acpi_current_gpe_count;
-	num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
-
-	all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
-			GFP_KERNEL);
-	if (all_attrs == NULL)
-		return;
-
-	all_counters = kzalloc(sizeof(struct event_counter) * (num_counters),
-				GFP_KERNEL);
-	if (all_counters == NULL)
-		goto fail;
-
-	counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
-			GFP_KERNEL);
-	if (counter_attrs == NULL)
-		goto fail;
-
-	for (i = 0; i < num_counters; ++i) {
-		char buffer[12];
-		char *name;
-
-		if (i < num_gpes)
-			sprintf(buffer, "gpe%02X", i);
-		else if (i == num_gpes + ACPI_EVENT_PMTIMER)
-			sprintf(buffer, "ff_pmtimer");
-		else if (i == num_gpes + ACPI_EVENT_GLOBAL)
-			sprintf(buffer, "ff_gbl_lock");
-		else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
-			sprintf(buffer, "ff_pwr_btn");
-		else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
-			sprintf(buffer, "ff_slp_btn");
-		else if (i == num_gpes + ACPI_EVENT_RTC)
-			sprintf(buffer, "ff_rt_clk");
-		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
-			sprintf(buffer, "gpe_all");
-		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
-			sprintf(buffer, "sci");
-		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
-			sprintf(buffer, "sci_not");
-		else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
-			sprintf(buffer, "error");
-		else
-			sprintf(buffer, "bug%02X", i);
-
-		name = kzalloc(strlen(buffer) + 1, GFP_KERNEL);
-		if (name == NULL)
-			goto fail;
-		strncpy(name, buffer, strlen(buffer) + 1);
-
-		sysfs_attr_init(&counter_attrs[i].attr);
-		counter_attrs[i].attr.name = name;
-		counter_attrs[i].attr.mode = 0644;
-		counter_attrs[i].show = counter_show;
-		counter_attrs[i].store = counter_set;
-
-		all_attrs[i] = &counter_attrs[i].attr;
-	}
-
-	interrupt_stats_attr_group.attrs = all_attrs;
-	if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
-		return;
-
-fail:
-	delete_gpe_attr_array();
-	return;
-}
-
-static void __exit interrupt_stats_exit(void)
-{
-	sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
-
-	delete_gpe_attr_array();
-
-	return;
-}
-
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
@@ -628,10 +165,6 @@ int __init acpi_system_init(void)
 	int result;
 
 	result = acpi_system_procfs_init();
-	if (result)
-		return result;
-
-	result = acpi_system_sysfs_init();
 
 	return result;
 }