Merge http://linux-acpi.bkbits.net/linux-acpi

into home.transmeta.com:/home/torvalds/v2.5/linux

drivers/acpi/ac.c

@@ -29,6 +29,7 @@
 #include <linux/types.h>
 #include <linux/compatmac.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include "acpi_bus.h"
 #include "acpi_drivers.h"
 
@@ -53,6 +54,7 @@ MODULE_LICENSE("GPL");
 
 int acpi_ac_add (struct acpi_device *device);
 int acpi_ac_remove (struct acpi_device *device, int type);
+static int acpi_ac_open_fs(struct inode *inode, struct file *file);
 
 static struct acpi_driver acpi_ac_driver = {
 	.name =		ACPI_AC_DRIVER_NAME,
@@ -69,6 +71,12 @@ struct acpi_ac {
 	unsigned long		state;
 };
 
+static struct file_operations acpi_ac_fops = {
+	.open		= acpi_ac_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 
 /* --------------------------------------------------------------------------
                                AC Adapter Management
@@ -103,53 +111,40 @@ acpi_ac_get_state (
 
 struct proc_dir_entry		*acpi_ac_dir = NULL;
 
-static int
-acpi_ac_read_state (
-	char			*page,
-	char			**start,
-	off_t			off,
-	int 			count,
-	int 			*eof,
-	void			*data)
+int acpi_ac_seq_show(struct seq_file *seq, void *offset)
 {
-	struct acpi_ac		*ac = (struct acpi_ac *) data;
-	char			*p = page;
-	int			len = 0;
+	struct acpi_ac		*ac = (struct acpi_ac *) seq->private;
 
-	ACPI_FUNCTION_TRACE("acpi_ac_read_state");
+	ACPI_FUNCTION_TRACE("acpi_ac_seq_show");
 
-	if (!ac || (off != 0))
-		goto end;
+	if (!ac)
+		return 0;
 
 	if (acpi_ac_get_state(ac)) {
-		p += sprintf(p, "ERROR: Unable to read AC Adapter state\n");
-		goto end;
+		seq_puts(seq, "ERROR: Unable to read AC Adapter state\n");
+		return 0;
 	}
 
-	p += sprintf(p, "state:                   ");
+	seq_puts(seq, "state:                   ");
 	switch (ac->state) {
 	case ACPI_AC_STATUS_OFFLINE:
-		p += sprintf(p, "off-line\n");
+		seq_puts(seq, "off-line\n");
 		break;
 	case ACPI_AC_STATUS_ONLINE:
-		p += sprintf(p, "on-line\n");
+		seq_puts(seq, "on-line\n");
 		break;
 	default:
-		p += sprintf(p, "unknown\n");
+		seq_puts(seq, "unknown\n");
 		break;
 	}
 
-end:
-	len = (p - page);
-	if (len <= off+count) *eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-
-	return_VALUE(len);
+	return 0;
+}
+	
+static int acpi_ac_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_ac_seq_show, PDE(inode)->data);
 }
-
 
 static int
 acpi_ac_add_fs (
@@ -174,7 +169,7 @@ acpi_ac_add_fs (
 			"Unable to create '%s' fs entry\n",
 			ACPI_AC_FILE_STATE));
 	else {
-		entry->read_proc = acpi_ac_read_state;
+		entry->proc_fops = &acpi_ac_fops;
 		entry->data = acpi_driver_data(device);
 	}
 

drivers/acpi/button.c

@@ -29,6 +29,7 @@
 #include <linux/types.h>
 #include <linux/compatmac.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include "acpi_bus.h"
 #include "acpi_drivers.h"
 
@@ -69,6 +70,7 @@ MODULE_LICENSE("GPL");
 
 int acpi_button_add (struct acpi_device *device);
 int acpi_button_remove (struct acpi_device *device, int type);
+static int acpi_button_open_fs(struct inode *inode, struct file *file);
 
 static struct acpi_driver acpi_button_driver = {
 	.name =		ACPI_BUTTON_DRIVER_NAME,
@@ -87,6 +89,12 @@ struct acpi_button {
 	unsigned long		pushed;
 };
 
+static struct file_operations acpi_button_fops = {
+	.open		= acpi_button_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
@@ -94,39 +102,26 @@ struct acpi_button {
 
 static struct proc_dir_entry	*acpi_button_dir = NULL;
 
-static int
-acpi_button_read_info (
-	char			*page,
-	char			**start,
-	off_t			off,
-	int 			count,
-	int 			*eof,
-	void			*data)
+static int acpi_button_seq_show(struct seq_file *seq, void *offset)
 {
-	struct acpi_button	*button = (struct acpi_button *) data;
-	char			*p = page;
-	int			len = 0;
+	struct acpi_button	*button = (struct acpi_button *) seq->private;
 
-	ACPI_FUNCTION_TRACE("acpi_button_read_info");
+	ACPI_FUNCTION_TRACE("acpi_button_seq_show");
 
 	if (!button || !button->device)
-		goto end;
+		return 0;
 
-	p += sprintf(p, "type:                    %s\n", 
+	seq_printf(seq, "type:                    %s\n", 
 		acpi_device_name(button->device));
 
-end:
-	len = (p - page);
-	if (len <= off+count) *eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-
-	return_VALUE(len);
+	return 0;
 }
 
-
+static int acpi_button_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_button_seq_show, PDE(inode)->data);
+}
+	
 static int
 acpi_button_add_fs (
 	struct acpi_device	*device)
@@ -170,7 +165,7 @@ acpi_button_add_fs (
 			"Unable to create '%s' fs entry\n",
 			ACPI_BUTTON_FILE_INFO));
 	else {
-		entry->read_proc = acpi_button_read_info;
+		entry->proc_fops = &acpi_button_fops;
 		entry->data = acpi_driver_data(device);
 	}
 

drivers/acpi/dispatcher/dsmthdat.c

 /*******************************************************************************
  *
  * Module Name: dsmthdat - control method arguments and local variables
- *              $Revision: 64 $
+ *              $Revision: 66 $
  *
  ******************************************************************************/
 
@@ -28,6 +28,7 @@
 #include "acdispat.h"
 #include "amlcode.h"
 #include "acnamesp.h"
+#include "acinterp.h"
 
 
 #define _COMPONENT          ACPI_DISPATCHER
@@ -274,6 +275,7 @@ acpi_ds_method_data_get_node (
  * RETURN:      Status
  *
  * DESCRIPTION: Insert an object onto the method stack at entry Opcode:Index.
+ *              Note: There is no "implicit conversion" for locals.
  *
  ******************************************************************************/
 
@@ -286,11 +288,17 @@ acpi_ds_method_data_set_value (
 {
 	acpi_status             status;
 	acpi_namespace_node     *node;
+	acpi_operand_object     *new_desc = object;
 
 
 	ACPI_FUNCTION_TRACE ("Ds_method_data_set_value");
 
 
+	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+		"obj %p op %X, ref count = %d [%s]\n", object,
+		opcode, object->common.reference_count,
+		acpi_ut_get_type_name (object->common.type)));
+
 	/* Get the namespace node for the arg/local */
 
 	status = acpi_ds_method_data_get_node (opcode, index, walk_state, &node);
@@ -298,14 +306,30 @@ acpi_ds_method_data_set_value (
 		return_ACPI_STATUS (status);
 	}
 
-	/* Increment ref count so object can't be deleted while installed */
+	/*
+	 * If the object has just been created and is not attached to anything,
+	 * (the reference count is 1), then we can just store it directly into
+	 * the arg/local.  Otherwise, we must copy it.
+	 */
+	if (object->common.reference_count > 1) {
+		status = acpi_ut_copy_iobject_to_iobject (object, &new_desc, walk_state);
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
 
-	acpi_ut_add_reference (object);
+	   ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Object Copied %p, new %p\n",
+		   object, new_desc));
+	}
+	else {
+		/* Increment ref count so object can't be deleted while installed */
+
+		acpi_ut_add_reference (new_desc);
+	}
 
-	/* Install the object into the stack entry */
+	/* Install the object */
 
-	node->object = object;
-	return_ACPI_STATUS (AE_OK);
+	node->object = new_desc;
+	return_ACPI_STATUS (status);
 }
 
 
@@ -560,7 +584,8 @@ acpi_ds_store_object_to_local (
 
 	current_obj_desc = acpi_ns_get_attached_object (node);
 	if (current_obj_desc == obj_desc) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p already installed!\n", obj_desc));
+		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p already installed!\n",
+			obj_desc));
 		return_ACPI_STATUS (status);
 	}
 
@@ -609,16 +634,12 @@ acpi_ds_store_object_to_local (
 					"Arg (%p) is an Obj_ref(Node), storing in node %p\n",
 					obj_desc, current_obj_desc));
 
-				/* Detach an existing object from the referenced Node */
-
-				acpi_ns_detach_object (current_obj_desc->reference.object);
-
 				/*
-				 * Store this object into the Node
+				 * Store this object to the Node
 				 * (perform the indirect store)
 				 */
-				status = acpi_ns_attach_object (current_obj_desc->reference.object,
-						  obj_desc, ACPI_GET_OBJECT_TYPE (obj_desc));
+				status = acpi_ex_store_object_to_node (obj_desc,
+						 current_obj_desc->reference.object, walk_state);
 				return_ACPI_STATUS (status);
 			}
 		}

drivers/acpi/events/evevent.c

 /******************************************************************************
  *
  * Module Name: evevent - Fixed and General Purpose Even handling and dispatch
- *              $Revision: 96 $
+ *              $Revision: 99 $
  *
  *****************************************************************************/
 
@@ -331,11 +331,8 @@ acpi_ev_gpe_initialize (void)
 	 *  FADT table contain zeros. The GPE0_LEN and GPE1_LEN do not need
 	 *  to be the same size."
 	 */
-	acpi_gbl_gpe_block_info[0].address_space_id = acpi_gbl_FADT->Xgpe0_blk.address_space_id;
-	acpi_gbl_gpe_block_info[1].address_space_id = acpi_gbl_FADT->Xgpe1_blk.address_space_id;
-
-	acpi_gbl_gpe_block_info[0].register_count = (u16) ACPI_DIV_16 (acpi_gbl_FADT->Xgpe0_blk.register_bit_width);
-	acpi_gbl_gpe_block_info[1].register_count = (u16) ACPI_DIV_16 (acpi_gbl_FADT->Xgpe1_blk.register_bit_width);
+	acpi_gbl_gpe_block_info[0].register_count = 0;
+	acpi_gbl_gpe_block_info[1].register_count = 0;
 
 	acpi_gbl_gpe_block_info[0].block_address = &acpi_gbl_FADT->Xgpe0_blk;
 	acpi_gbl_gpe_block_info[1].block_address = &acpi_gbl_FADT->Xgpe1_blk;
@@ -343,28 +340,25 @@ acpi_ev_gpe_initialize (void)
 	acpi_gbl_gpe_block_info[0].block_base_number = 0;
 	acpi_gbl_gpe_block_info[1].block_base_number = acpi_gbl_FADT->gpe1_base;
 
-	/* Warn and exit if there are no GPE registers */
-
-	acpi_gbl_gpe_register_count = acpi_gbl_gpe_block_info[0].register_count +
-			 acpi_gbl_gpe_block_info[1].register_count;
-	if (!acpi_gbl_gpe_register_count) {
-		ACPI_REPORT_WARNING (("There are no GPE blocks defined in the FADT\n"));
-		return_ACPI_STATUS (AE_OK);
-	}
 
 	/*
 	 * Determine the maximum GPE number for this machine.
 	 * Note: both GPE0 and GPE1 are optional, and either can exist without
-	 * the other
+	 * the other.
+	 * If EITHER the register length OR the block address are zero, then that
+	 * particular block is not supported.
 	 */
-	if (acpi_gbl_gpe_block_info[0].register_count) {
-		/* GPE block 0 exists */
+	if (acpi_gbl_FADT->Xgpe0_blk.register_bit_width && ACPI_GET_ADDRESS (acpi_gbl_FADT->Xgpe0_blk.address)) {
+		/* GPE block 0 exists (has length and address > 0) */
 
-		acpi_gbl_gpe_number_max = ACPI_MUL_8 (acpi_gbl_gpe_block_info[0].register_count) - 1;
+		acpi_gbl_gpe_block_info[0].register_count = (u16) ACPI_DIV_16 (acpi_gbl_FADT->Xgpe0_blk.register_bit_width);
+		acpi_gbl_gpe_number_max                 = ACPI_MUL_8 (acpi_gbl_gpe_block_info[0].register_count) - 1;
 	}
 
-	if (acpi_gbl_gpe_block_info[1].register_count) {
-		/* GPE block 1 exists */
+	if (acpi_gbl_FADT->Xgpe1_blk.register_bit_width && ACPI_GET_ADDRESS (acpi_gbl_FADT->Xgpe1_blk.address)) {
+		/* GPE block 1 exists (has length and address > 0) */
+
+		acpi_gbl_gpe_block_info[1].register_count = (u16) ACPI_DIV_16 (acpi_gbl_FADT->Xgpe1_blk.register_bit_width);
 
 		/* Check for GPE0/GPE1 overlap (if both banks exist) */
 
@@ -385,6 +379,15 @@ acpi_ev_gpe_initialize (void)
 				 (ACPI_MUL_8 (acpi_gbl_gpe_block_info[1].register_count) - 1);
 	}
 
+	/* Warn and exit if there are no GPE registers */
+
+	acpi_gbl_gpe_register_count = acpi_gbl_gpe_block_info[0].register_count +
+			 acpi_gbl_gpe_block_info[1].register_count;
+	if (!acpi_gbl_gpe_register_count) {
+		ACPI_REPORT_WARNING (("There are no GPE blocks defined in the FADT\n"));
+		return_ACPI_STATUS (AE_OK);
+	}
+
 	/* Check for Max GPE number out-of-range */
 
 	if (acpi_gbl_gpe_number_max > ACPI_GPE_MAX) {
@@ -460,8 +463,8 @@ acpi_ev_gpe_initialize (void)
 							  + i
 							  + acpi_gbl_gpe_block_info[gpe_block].register_count));
 
-			gpe_register_info->status_address.address_space_id = acpi_gbl_gpe_block_info[gpe_block].address_space_id;
-			gpe_register_info->enable_address.address_space_id = acpi_gbl_gpe_block_info[gpe_block].address_space_id;
+			gpe_register_info->status_address.address_space_id = acpi_gbl_gpe_block_info[gpe_block].block_address->address_space_id;
+			gpe_register_info->enable_address.address_space_id = acpi_gbl_gpe_block_info[gpe_block].block_address->address_space_id;
 			gpe_register_info->status_address.register_bit_width = 8;
 			gpe_register_info->enable_address.register_bit_width = 8;
 			gpe_register_info->status_address.register_bit_offset = 8;
@@ -565,7 +568,7 @@ acpi_ev_save_method_info (
 	/* Extract the name from the object and convert to a string */
 
 	ACPI_MOVE_UNALIGNED32_TO_32 (name,
-			  &((acpi_namespace_node *) obj_handle)->name.integer);
+			 &((acpi_namespace_node *) obj_handle)->name.integer);
 	name[ACPI_NAME_SIZE] = 0;
 
 	/*
@@ -614,8 +617,8 @@ acpi_ev_save_method_info (
 	 * Now we can add this information to the Gpe_info block
 	 * for use during dispatch of this GPE.
 	 */
-	acpi_gbl_gpe_number_info [gpe_number_index].type    = type;
-	acpi_gbl_gpe_number_info [gpe_number_index].method_handle = obj_handle;
+	acpi_gbl_gpe_number_info [gpe_number_index].type  = type;
+	acpi_gbl_gpe_number_info [gpe_number_index].method_node = (acpi_namespace_node *) obj_handle;
 
 	/*
 	 * Enable the GPE (SCIs should be disabled at this point)
@@ -625,7 +628,7 @@ acpi_ev_save_method_info (
 		return (status);
 	}
 
-	ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Registered GPE method %s as GPE number %X\n",
+	ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Registered GPE method %s as GPE number %2.2X\n",
 		name, gpe_number));
 	return (AE_OK);
 }
@@ -805,15 +808,16 @@ acpi_ev_asynch_execute_gpe_method (
 		return_VOID;
 	}
 
-	if (gpe_info.method_handle) {
+	if (gpe_info.method_node) {
 		/*
 		 * Invoke the GPE Method (_Lxx, _Exx):
 		 * (Evaluate the _Lxx/_Exx control method that corresponds to this GPE.)
 		 */
-		status = acpi_ns_evaluate_by_handle (gpe_info.method_handle, NULL, NULL);
+		status = acpi_ns_evaluate_by_handle (gpe_info.method_node, NULL, NULL);
 		if (ACPI_FAILURE (status)) {
-			ACPI_REPORT_ERROR (("%s while evaluating GPE%X method\n",
-				acpi_format_exception (status), gpe_number));
+			ACPI_REPORT_ERROR (("%s while evaluating method [%4.4s] for GPE[%2.2X]\n",
+				acpi_format_exception (status),
+				gpe_info.method_node->name.ascii, gpe_number));
 		}
 	}
 
@@ -881,7 +885,7 @@ acpi_ev_gpe_dispatch (
 	if (gpe_info->type & ACPI_EVENT_EDGE_TRIGGERED) {
 		status = acpi_hw_clear_gpe (gpe_number);
 		if (ACPI_FAILURE (status)) {
-			ACPI_REPORT_ERROR (("Acpi_ev_gpe_dispatch: Unable to clear GPE[%X]\n", gpe_number));
+			ACPI_REPORT_ERROR (("Acpi_ev_gpe_dispatch: Unable to clear GPE[%2.2X]\n", gpe_number));
 			return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
 		}
 	}
@@ -898,14 +902,14 @@ acpi_ev_gpe_dispatch (
 
 		gpe_info->handler (gpe_info->context);
 	}
-	else if (gpe_info->method_handle) {
+	else if (gpe_info->method_node) {
 		/*
 		 * Disable GPE, so it doesn't keep firing before the method has a
 		 * chance to run.
 		 */
 		status = acpi_hw_disable_gpe (gpe_number);
 		if (ACPI_FAILURE (status)) {
-			ACPI_REPORT_ERROR (("Acpi_ev_gpe_dispatch: Unable to disable GPE[%X]\n", gpe_number));
+			ACPI_REPORT_ERROR (("Acpi_ev_gpe_dispatch: Unable to disable GPE[%2.2X]\n", gpe_number));
 			return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
 		}
 
@@ -915,13 +919,13 @@ acpi_ev_gpe_dispatch (
 		if (ACPI_FAILURE (acpi_os_queue_for_execution (OSD_PRIORITY_GPE,
 				 acpi_ev_asynch_execute_gpe_method,
 				 ACPI_TO_POINTER (gpe_number)))) {
-			ACPI_REPORT_ERROR (("Acpi_ev_gpe_dispatch: Unable to queue handler for GPE[%X], event is disabled\n", gpe_number));
+			ACPI_REPORT_ERROR (("Acpi_ev_gpe_dispatch: Unable to queue handler for GPE[%2.2X], event is disabled\n", gpe_number));
 		}
 	}
 	else {
 		/* No handler or method to run! */
 
-		ACPI_REPORT_ERROR (("Acpi_ev_gpe_dispatch: No handler or method for GPE[%X], disabling event\n", gpe_number));
+		ACPI_REPORT_ERROR (("Acpi_ev_gpe_dispatch: No handler or method for GPE[%2.2X], disabling event\n", gpe_number));
 
 		/*
 		 * Disable the GPE.  The GPE will remain disabled until the ACPI
@@ -929,7 +933,7 @@ acpi_ev_gpe_dispatch (
 		 */
 		status = acpi_hw_disable_gpe (gpe_number);
 		if (ACPI_FAILURE (status)) {
-			ACPI_REPORT_ERROR (("Acpi_ev_gpe_dispatch: Unable to disable GPE[%X]\n", gpe_number));
+			ACPI_REPORT_ERROR (("Acpi_ev_gpe_dispatch: Unable to disable GPE[%2.2X]\n", gpe_number));
 			return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
 		}
 	}
@@ -940,7 +944,7 @@ acpi_ev_gpe_dispatch (
 	if (gpe_info->type & ACPI_EVENT_LEVEL_TRIGGERED) {
 		status = acpi_hw_clear_gpe (gpe_number);
 		if (ACPI_FAILURE (status)) {
-			ACPI_REPORT_ERROR (("Acpi_ev_gpe_dispatch: Unable to clear GPE[%X]\n", gpe_number));
+			ACPI_REPORT_ERROR (("Acpi_ev_gpe_dispatch: Unable to clear GPE[%2.2X]\n", gpe_number));
 			return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
 		}
 	}

drivers/acpi/events/evrgnini.c

 /******************************************************************************
  *
  * Module Name: evrgnini- ACPI Address_space (Op_region) init
- *              $Revision: 63 $
+ *              $Revision: 64 $
  *
  *****************************************************************************/
 
@@ -269,6 +269,11 @@ acpi_ev_pci_config_region_setup (
 		pci_id->bus = ACPI_LOWORD (temp);
 	}
 
+	/*
+	 * Complete this device's Pci_id
+	 */
+	acpi_os_derive_pci_id (node, region_obj->region.node, &pci_id);
+
 	*region_context = pci_id;
 	return_ACPI_STATUS (AE_OK);
 }

drivers/acpi/include/acconfig.h

 /******************************************************************************
  *
  * Name: acconfig.h - Global configuration constants
- *       $Revision: 118 $
+ *       $Revision: 119 $
  *
  *****************************************************************************/
 
@@ -54,7 +54,7 @@
 
 /* Version string */
 
-#define ACPI_CA_VERSION                 0x20021115
+#define ACPI_CA_VERSION                 0x20021122
 
 /* Version of ACPI supported */
 

drivers/acpi/include/aclocal.h

 /******************************************************************************
  *
  * Name: aclocal.h - Internal data types used across the ACPI subsystem
- *       $Revision: 179 $
+ *       $Revision: 181 $
  *
  *****************************************************************************/
 
@@ -301,7 +301,6 @@ typedef struct
 
 typedef struct
 {
-	u8                      address_space_id;
 	acpi_generic_address    *block_address;
 	u16                     register_count;
 	u8                      block_base_number;
@@ -330,7 +329,7 @@ typedef struct
 
 typedef struct
 {
-	acpi_handle             method_handle;  /* Method handle for direct (fast) execution */
+	acpi_namespace_node     *method_node;   /* Method node for this GPE level */
 	acpi_gpe_handler        handler;        /* Address of handler, if any */
 	void                    *context;       /* Context to be passed to handler */
 	u8                      type;           /* Level or Edge */

drivers/acpi/include/acpiosxf.h

@@ -246,6 +246,14 @@ acpi_os_write_pci_configuration (
 	acpi_integer            value,
 	u32                     width);
 
+/*
+ * Interim function needed for PCI IRQ routing
+ */
+void
+acpi_os_derive_pci_id(
+	acpi_handle	            rhandle,
+	acpi_handle             chandle,
+	acpi_pci_id	            **pci_id);
 
 /*
  * Miscellaneous

drivers/acpi/osl.c

@@ -36,6 +36,7 @@
 #include <linux/delay.h>
 #include <linux/workqueue.h>
 #include <asm/io.h>
+#include "acpi_bus.h"
 #include "acpi.h"
 
 #ifdef CONFIG_ACPI_EFI
@@ -483,6 +484,44 @@ acpi_os_write_pci_configuration (
 	return (result ? AE_ERROR : AE_OK);
 }
 
+/* TODO: Rewrite this code!!! */
+void
+acpi_os_derive_pci_id (
+	acpi_handle     rhandle,        /* upper bound  */
+	acpi_handle     chandle,        /* current node */
+	acpi_pci_id     **id)
+{
+	acpi_handle     handle;
+	acpi_pci_id     *pci_id = *id;
+	acpi_status     status;
+	unsigned long   temp;
+	acpi_object_type type;
+	u8              tu8;
+
+	acpi_get_parent(chandle, &handle);
+	if (handle != rhandle) {
+		acpi_os_derive_pci_id(rhandle, handle, &pci_id);
+
+		status = acpi_get_type(handle, &type);
+		if ( (ACPI_FAILURE(status)) || (type != ACPI_TYPE_DEVICE) )
+			return;
+
+		status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &temp);
+		if (ACPI_SUCCESS(status)) {
+			pci_id->device  = ACPI_HIWORD (ACPI_LODWORD (temp));
+			pci_id->function = ACPI_LOWORD (ACPI_LODWORD (temp));
+
+			/* any nicer way to get bus number of bridge ? */
+			status = acpi_os_read_pci_configuration(pci_id, 0x0e, &tu8, 8);
+			if (ACPI_SUCCESS(status) && (tu8 & 0x7f) == 1) {
+				status = acpi_os_read_pci_configuration(pci_id, 0x19, &tu8, 8);
+				if (ACPI_SUCCESS(status))
+					pci_id->bus = tu8;
+			}
+		}
+	}
+}
+
 #else /*!CONFIG_ACPI_PCI*/
 
 acpi_status

drivers/acpi/parser/psopcode.c

 /******************************************************************************
  *
  * Module Name: psopcode - Parser/Interpreter opcode information table
- *              $Revision: 73 $
+ *              $Revision: 74 $
  *
  *****************************************************************************/
 
@@ -734,7 +734,7 @@ NATIVE_CHAR *
 acpi_ps_get_opcode_name (
 	u16                     opcode)
 {
-#ifdef ACPI_DISASSEMBLER
+#if defined(ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT)
 
 	const acpi_opcode_info  *op;
 

drivers/acpi/power.c

@@ -29,6 +29,7 @@
 #include <linux/types.h>
 #include <linux/compatmac.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include "acpi_bus.h"
 #include "acpi_drivers.h"
 
@@ -48,6 +49,7 @@ ACPI_MODULE_NAME		("acpi_power")
 
 int acpi_power_add (struct acpi_device *device);
 int acpi_power_remove (struct acpi_device *device, int type);
+static int acpi_power_open_fs(struct inode *inode, struct file *file);
 
 static struct acpi_driver acpi_power_driver = {
 	.name =		ACPI_POWER_DRIVER_NAME,
@@ -71,6 +73,12 @@ struct acpi_power_resource
 
 static struct list_head		acpi_power_resource_list;
 
+static struct file_operations acpi_power_fops = {
+	.open		= acpi_power_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 
 /* --------------------------------------------------------------------------
                              Power Resource Management
@@ -379,58 +387,45 @@ acpi_power_transition (
 
 struct proc_dir_entry		*acpi_power_dir = NULL;
 
-
-static int
-acpi_power_read_status (
-	char			*page,
-	char			**start,
-	off_t			off,
-	int 			count,
-	int 			*eof,
-	void			*data)
+static int acpi_power_seq_show(struct seq_file *seq, void *offset)
 {
 	struct acpi_power_resource *resource = NULL;
-	char			*p = page;
-	int			len;
 
-	ACPI_FUNCTION_TRACE("acpi_power_read_status");
+	ACPI_FUNCTION_TRACE("acpi_power_seq_show");
 
-	if (!data || (off != 0))
-		goto end;
+	resource = (struct acpi_power_resource *)seq->private;
 
-	resource = (struct acpi_power_resource *) data;
+	if (!resource)
+		goto end;
 
-	p += sprintf(p, "state:                   ");
+	seq_puts(seq, "state:                   ");
 	switch (resource->state) {
 	case ACPI_POWER_RESOURCE_STATE_ON:
-		p += sprintf(p, "on\n");
+		seq_puts(seq, "on\n");
 		break;
 	case ACPI_POWER_RESOURCE_STATE_OFF:
-		p += sprintf(p, "off\n");
+		seq_puts(seq, "off\n");
 		break;
 	default:
-		p += sprintf(p, "unknown\n");
+		seq_puts(seq, "unknown\n");
 		break;
 	}
 
-	p += sprintf(p, "system level:            S%d\n",
-		resource->system_level);
-	p += sprintf(p, "order:                   %d\n",
-		resource->order);
-	p += sprintf(p, "reference count:         %d\n",
-		resource->references);
+	seq_printf(seq, "system level:            S%d\n"
+			"order:                   %d\n"
+			"reference count:         %d\n",
+			resource->system_level,
+			resource->order,
+			resource->references);
 
 end:
-	len = (p - page);
-	if (len <= off+count) *eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-
-	return_VALUE(len);
+	return 0;
 }
 
+static int acpi_power_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_power_seq_show, PDE(inode)->data);
+}
 
 static int
 acpi_power_add_fs (
@@ -458,7 +453,7 @@ acpi_power_add_fs (
 			"Unable to create '%s' fs entry\n",
 			ACPI_POWER_FILE_STATUS));
 	else {
-		entry->read_proc = acpi_power_read_status;
+		entry->proc_fops = &acpi_power_fops;
 		entry->data = acpi_driver_data(device);
 	}
 

drivers/acpi/processor.c

@@ -40,6 +40,7 @@
 #include <asm/delay.h>
 #include <linux/compatmac.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include "acpi_bus.h"
 #include "acpi_drivers.h"
 
@@ -90,6 +91,11 @@ MODULE_LICENSE("GPL");
 
 static int acpi_processor_add (struct acpi_device *device);
 static int acpi_processor_remove (struct acpi_device *device, int type);
+static int acpi_processor_info_open_fs(struct inode *inode, struct file *file);
+static int acpi_processor_throttling_open_fs(struct inode *inode, struct file *file);
+static int acpi_processor_power_open_fs(struct inode *inode, struct file *file);
+static int acpi_processor_limit_open_fs(struct inode *inode, struct file *file);
+
 
 static struct acpi_driver acpi_processor_driver = {
 	.name =		ACPI_PROCESSOR_DRIVER_NAME,
@@ -224,6 +230,34 @@ struct acpi_processor_errata {
 	}			piix4;
 };
 
+static struct file_operations acpi_processor_info_fops = {
+	.open 		= acpi_processor_info_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static struct file_operations acpi_processor_power_fops = {
+	.open 		= acpi_processor_power_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static struct file_operations acpi_processor_throttling_fops = {
+	.open 		= acpi_processor_throttling_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static struct file_operations acpi_processor_limit_fops = {
+	.open 		= acpi_processor_limit_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 static struct acpi_processor	*processors[NR_CPUS];
 static struct acpi_processor_errata errata;
 static void (*pm_idle_save)(void) = NULL;
@@ -231,6 +265,13 @@ static void (*pm_idle_save)(void) = NULL;
 #ifdef CONFIG_ACPI_PROCESSOR_PERF
 static unsigned int cpufreq_usage_count = 0;
 static struct cpufreq_driver *acpi_cpufreq_driver;
+static int acpi_processor_perf_open_fs(struct inode *inode, struct file *file);
+static struct file_operations acpi_processor_perf_fops = {
+	.open 		= acpi_processor_perf_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 #endif
 
 
@@ -1884,174 +1925,132 @@ acpi_cpufreq_exit (
 
 struct proc_dir_entry		*acpi_processor_dir = NULL;
 
-static int
-acpi_processor_read_info (
-	char			*page,
-	char			**start,
-	off_t			off,
-	int 			count,
-	int 			*eof,
-	void			*data)
+static int acpi_processor_info_seq_show(struct seq_file *seq, void *offset)
 {
-	struct acpi_processor	*pr = (struct acpi_processor *) data;
-	char			*p = page;
-	int			len = 0;
+	struct acpi_processor	*pr = (struct acpi_processor *)seq->private;
 
-	ACPI_FUNCTION_TRACE("acpi_processor_read_info");
+	ACPI_FUNCTION_TRACE("acpi_processor_info_seq_show");
 
-	if (!pr || (off != 0))
+	if (!pr)
 		goto end;
 
-	p += sprintf(p, "processor id:            %d\n",
-		pr->id);
-
-	p += sprintf(p, "acpi id:                 %d\n",
-		pr->acpi_id);
-
-	p += sprintf(p, "bus mastering control:   %s\n",
-		pr->flags.bm_control ? "yes" : "no");
-
-	p += sprintf(p, "power management:        %s\n",
-		pr->flags.power ? "yes" : "no");
-
-	p += sprintf(p, "throttling control:      %s\n",
-		pr->flags.throttling ? "yes" : "no");
-
-	p += sprintf(p, "performance management:  %s\n",
-		pr->flags.performance ? "yes" : "no");
-
-	p += sprintf(p, "limit interface:         %s\n",
-		pr->flags.limit ? "yes" : "no");
+	seq_printf(seq, "processor id:            %d\n"
+			"acpi id:                 %d\n"
+			"bus mastering control:   %s\n"
+			"power management:        %s\n"
+			"throttling control:      %s\n"
+			"performance management:  %s\n"
+			"limit interface:         %s\n",
+			pr->id,
+			pr->acpi_id,
+			pr->flags.bm_control ? "yes" : "no",
+			pr->flags.power ? "yes" : "no",
+			pr->flags.throttling ? "yes" : "no",
+			pr->flags.performance ? "yes" : "no",
+			pr->flags.limit ? "yes" : "no");
 
 end:
-	len = (p - page);
-	if (len <= off+count) *eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-
-	return_VALUE(len);
+	return 0;
 }
 
+static int acpi_processor_info_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_processor_info_seq_show,
+						PDE(inode)->data);
+}
 
-static int
-acpi_processor_read_power (
-	char			*page,
-	char			**start,
-	off_t			off,
-	int 			count,
-	int 			*eof,
-	void			*data)
+static int acpi_processor_power_seq_show(struct seq_file *seq, void *offset)
 {
-	struct acpi_processor	*pr = (struct acpi_processor *) data;
-	char			*p = page;
-	int			len = 0;
+	struct acpi_processor	*pr = (struct acpi_processor *)seq->private;
 	int			i = 0;
 
-	ACPI_FUNCTION_TRACE("acpi_processor_read_power");
+	ACPI_FUNCTION_TRACE("acpi_processor_power_seq_show");
 
-	if (!pr || (off != 0))
+	if (!pr)
 		goto end;
 
-	p += sprintf(p, "active state:            C%d\n",
-		pr->power.state);
-
-	p += sprintf(p, "default state:           C%d\n",
-		pr->power.default_state);
+	seq_printf(seq, "active state:            C%d\n"
+			"default state:           C%d\n"
+			"bus master activity:     %08x\n",
+			pr->power.state,
+			pr->power.default_state,
+			pr->power.bm_activity);
 
-	p += sprintf(p, "bus master activity:     %08x\n",
-		pr->power.bm_activity);
+	seq_puts(seq, "states:\n");
 
-	p += sprintf(p, "states:\n");
-
-	for (i=1; i<ACPI_C_STATE_COUNT; i++) {
-
-		p += sprintf(p, "   %cC%d:                  ", 
+	for (i = 1; i < ACPI_C_STATE_COUNT; i++) {
+		seq_printf(seq, "   %cC%d:                  ", 
 			(i == pr->power.state?'*':' '), i);
 
 		if (!pr->power.states[i].valid) {
-			p += sprintf(p, "<not supported>\n");
+			seq_puts(seq, "<not supported>\n");
 			continue;
 		}
 
 		if (pr->power.states[i].promotion.state)
-			p += sprintf(p, "promotion[C%d] ",
+			seq_printf(seq, "promotion[C%d] ",
 				pr->power.states[i].promotion.state);
 		else
-			p += sprintf(p, "promotion[--] ");
+			seq_puts(seq, "promotion[--] ");
 
 		if (pr->power.states[i].demotion.state)
-			p += sprintf(p, "demotion[C%d] ",
+			seq_printf(seq, "demotion[C%d] ",
 				pr->power.states[i].demotion.state);
 		else
-			p += sprintf(p, "demotion[--] ");
+			seq_puts(seq, "demotion[--] ");
 
-		p += sprintf(p, "latency[%03d] usage[%08d]\n",
+		seq_printf(seq, "latency[%03d] usage[%08d]\n",
 			pr->power.states[i].latency,
 			pr->power.states[i].usage);
 	}
 
 end:
-	len = (p - page);
-	if (len <= off+count) *eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-
-	return_VALUE(len);
+	return 0;
+}
+
+static int acpi_processor_power_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_processor_power_seq_show,
+						PDE(inode)->data);
 }
 
 #ifdef CONFIG_ACPI_PROCESSOR_PERF
-static int
-acpi_processor_read_performance (
-	char			*page,
-	char			**start,
-	off_t			off,
-	int 			count,
-	int 			*eof,
-	void			*data)
+static int acpi_processor_perf_seq_show(struct seq_file *seq, void *offset)
 {
-	struct acpi_processor	*pr = (struct acpi_processor *) data;
-	char			*p = page;
-	int			len = 0;
+	struct acpi_processor	*pr = (struct acpi_processor *)seq->private;
 	int			i = 0;
 
-	ACPI_FUNCTION_TRACE("acpi_processor_read_performance");
+	ACPI_FUNCTION_TRACE("acpi_processor_perf_seq_show");
 
-	if (!pr || (off != 0))
+	if (!pr)
 		goto end;
 
 	if (!pr->flags.performance) {
-		p += sprintf(p, "<not supported>\n");
+		seq_puts(seq, "<not supported>\n");
 		goto end;
 	}
 
-	p += sprintf(p, "state count:             %d\n",
-		pr->performance.state_count);
-
-	p += sprintf(p, "active state:            P%d\n",
-		pr->performance.state);
-
-	p += sprintf(p, "states:\n");
+	seq_printf(seq, "state count:             %d\n"
+			"active state:            P%d\n",
+			pr->performance.state_count,
+			pr->performance.state);
 
-	for (i=0; i<pr->performance.state_count; i++)
-		p += sprintf(p, "   %cP%d:                  %d MHz, %d mW, %d uS\n",
+	seq_puts(seq, "states:\n");
+	for (i = 0; i < pr->performance.state_count; i++)
+		seq_printf(seq, "   %cP%d:                  %d MHz, %d mW, %d uS\n",
 			(i == pr->performance.state?'*':' '), i,
 			(u32) pr->performance.states[i].core_frequency,
 			(u32) pr->performance.states[i].power,
 			(u32) pr->performance.states[i].transition_latency);
 
 end:
-	len = (p - page);
-	if (len <= off+count) *eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-
-	return_VALUE(len);
+	return 0;
+}
+
+static int acpi_processor_perf_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_processor_perf_seq_show,
+						PDE(inode)->data);
 }
 
 static int
@@ -2091,63 +2090,49 @@ acpi_processor_write_performance (
 }
 #endif
 
-
-static int
-acpi_processor_read_throttling (
-	char			*page,
-	char			**start,
-	off_t			off,
-	int 			count,
-	int 			*eof,
-	void			*data)
+static int acpi_processor_throttling_seq_show(struct seq_file *seq, void *offset)
 {
-	struct acpi_processor	*pr = (struct acpi_processor *) data;
-	char			*p = page;
-	int			len = 0;
+	struct acpi_processor	*pr = (struct acpi_processor *)seq->private;
 	int			i = 0;
 	int                     result = 0;
 
-	ACPI_FUNCTION_TRACE("acpi_processor_read_throttling");
+	ACPI_FUNCTION_TRACE("acpi_processor_throttling_seq_show");
 
-	if (!pr || (off != 0))
+	if (!pr)
 		goto end;
 
 	if (!(pr->throttling.state_count > 0)) {
-		p += sprintf(p, "<not supported>\n");
+		seq_puts(seq, "<not supported>\n");
 		goto end;
 	}
 
 	result = acpi_processor_get_throttling(pr);
 
 	if (result) {
-		p += sprintf(p, "Could not determine current throttling state.\n");
+		seq_puts(seq, "Could not determine current throttling state.\n");
 		goto end;
 	}
 
-	p += sprintf(p, "state count:             %d\n",
-		pr->throttling.state_count);
-
-	p += sprintf(p, "active state:            T%d\n",
-		pr->throttling.state);
+	seq_printf(seq, "state count:             %d\n"
+			"active state:            T%d\n",
+			pr->throttling.state_count,
+			pr->throttling.state);
 
-	p += sprintf(p, "states:\n");
-
-	for (i=0; i<pr->throttling.state_count; i++)
-		p += sprintf(p, "   %cT%d:                  %02d%%\n",
+	seq_puts(seq, "states:\n");
+	for (i = 0; i < pr->throttling.state_count; i++)
+		seq_printf(seq, "   %cT%d:                  %02d%%\n",
 			(i == pr->throttling.state?'*':' '), i,
 			(pr->throttling.states[i].performance?pr->throttling.states[i].performance/10:0));
 
 end:
-	len = (p - page);
-	if (len <= off+count) *eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-
-	return_VALUE(len);
+	return 0;
 }
 
+static int acpi_processor_throttling_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_processor_throttling_seq_show,
+						PDE(inode)->data);
+}
 
 static int
 acpi_processor_write_throttling (
@@ -2178,53 +2163,38 @@ acpi_processor_write_throttling (
 	return_VALUE(count);
 }
 
-
-static int
-acpi_processor_read_limit (
-	char			*page,
-	char			**start,
-	off_t			off,
-	int 			count,
-	int 			*eof,
-	void			*data)
+static int acpi_processor_limit_seq_show(struct seq_file *seq, void *offset)
 {
-	struct acpi_processor	*pr = (struct acpi_processor *) data;
-	char			*p = page;
-	int			len = 0;
+	struct acpi_processor	*pr = (struct acpi_processor *)seq->private;
 
-	ACPI_FUNCTION_TRACE("acpi_processor_read_limit");
+	ACPI_FUNCTION_TRACE("acpi_processor_limit_seq_show");
 
-	if (!pr || (off != 0))
+	if (!pr)
 		goto end;
 
 	if (!pr->flags.limit) {
-		p += sprintf(p, "<not supported>\n");
+		seq_puts(seq, "<not supported>\n");
 		goto end;
 	}
 
-	p += sprintf(p, "active limit:            P%d:T%d\n",
-		pr->limit.state.px, pr->limit.state.tx);
-
-	p += sprintf(p, "platform limit:          P%d:T0\n",
-		pr->flags.performance?pr->performance.platform_limit:0);
-
-	p += sprintf(p, "user limit:              P%d:T%d\n",
-		pr->limit.user.px, pr->limit.user.tx);
-
-	p += sprintf(p, "thermal limit:           P%d:T%d\n",
-		pr->limit.thermal.px, pr->limit.thermal.tx);
+	seq_printf(seq, "active limit:            P%d:T%d\n"
+			"platform limit:          P%d:T0\n"
+			"user limit:              P%d:T%d\n"
+			"thermal limit:           P%d:T%d\n",
+			pr->limit.state.px, pr->limit.state.tx,
+			pr->flags.performance?pr->performance.platform_limit:0,
+			pr->limit.user.px, pr->limit.user.tx,
+			pr->limit.thermal.px, pr->limit.thermal.tx);
 
 end:
-	len = (p - page);
-	if (len <= off+count) *eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-
-	return_VALUE(len);
+	return 0;
 }
 
+static int acpi_processor_limit_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_processor_limit_seq_show,
+						PDE(inode)->data);
+}
 
 static int
 acpi_processor_write_limit (
@@ -2304,7 +2274,7 @@ acpi_processor_add_fs (
 			"Unable to create '%s' fs entry\n",
 			ACPI_PROCESSOR_FILE_INFO));
 	else {
-		entry->read_proc = acpi_processor_read_info;
+		entry->proc_fops = &acpi_processor_info_fops;
 		entry->data = acpi_driver_data(device);
 	}
 
@@ -2316,7 +2286,7 @@ acpi_processor_add_fs (
 			"Unable to create '%s' fs entry\n",
 			ACPI_PROCESSOR_FILE_POWER));
 	else {
-		entry->read_proc = acpi_processor_read_power;
+		entry->proc_fops = &acpi_processor_power_fops;
 		entry->data = acpi_driver_data(device);
 	}
 
@@ -2329,7 +2299,7 @@ acpi_processor_add_fs (
 			"Unable to create '%s' fs entry\n",
 			ACPI_PROCESSOR_FILE_PERFORMANCE));
 	else {
-		entry->read_proc = acpi_processor_read_performance;
+		entry->proc_fops = &acpi_processor_perf_fops;
 		entry->write_proc = acpi_processor_write_performance;
 		entry->data = acpi_driver_data(device);
 	}
@@ -2343,7 +2313,7 @@ acpi_processor_add_fs (
 			"Unable to create '%s' fs entry\n",
 			ACPI_PROCESSOR_FILE_THROTTLING));
 	else {
-		entry->read_proc = acpi_processor_read_throttling;
+		entry->proc_fops = &acpi_processor_throttling_fops;
 		entry->write_proc = acpi_processor_write_throttling;
 		entry->data = acpi_driver_data(device);
 	}
@@ -2356,7 +2326,7 @@ acpi_processor_add_fs (
 			"Unable to create '%s' fs entry\n",
 			ACPI_PROCESSOR_FILE_LIMIT));
 	else {
-		entry->read_proc = acpi_processor_read_limit;
+		entry->proc_fops = &acpi_processor_limit_fops;
 		entry->write_proc = acpi_processor_write_limit;
 		entry->data = acpi_driver_data(device);
 	}

drivers/acpi/sleep.c

@@ -15,6 +15,7 @@
 #include <linux/pm.h>
 #include <linux/device.h>
 #include <linux/suspend.h>
+#include <linux/seq_file.h>
 
 #include <asm/uaccess.h>
 #include <asm/acpi.h>
@@ -32,8 +33,25 @@ ACPI_MODULE_NAME		("sleep")
 #define ACPI_SYSTEM_FILE_SLEEP		"sleep"
 #define ACPI_SYSTEM_FILE_ALARM		"alarm"
 
+static int acpi_system_sleep_open_fs(struct inode *inode, struct file *file);
+static int acpi_system_alarm_open_fs(struct inode *inode, struct file *file);
+
 static u8 sleep_states[ACPI_S_STATE_COUNT];
 
+static struct file_operations acpi_system_sleep_fops = {
+	.open		= acpi_system_sleep_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static struct file_operations acpi_system_alarm_fops = {
+	.open		= acpi_system_alarm_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 static void
 acpi_power_off (void)
 {
@@ -271,43 +289,26 @@ acpi_suspend (
 	return status;
 }
 
-
-static int
-acpi_system_read_sleep (
-        char                    *page,
-        char                    **start,
-        off_t                   off,
-        int                     count,
-        int                     *eof,
-        void                    *data)
+static int acpi_system_sleep_seq_show(struct seq_file *seq, void *offset)
 {
-	char			*p = page;
-	int			size;
 	int			i;
 
-	ACPI_FUNCTION_TRACE("acpi_system_read_sleep");
-
-	if (off != 0)
-		goto end;
+	ACPI_FUNCTION_TRACE("acpi_system_sleep_seq_show");
 
 	for (i = 0; i <= ACPI_STATE_S5; i++) {
 		if (sleep_states[i])
-			p += sprintf(p,"S%d ", i);
+			seq_printf(seq,"S%d ", i);
 	}
 
-	p += sprintf(p, "\n");
+	seq_puts(seq, "\n");
 
-end:
-	size = (p - page);
-	if (size <= off+count) *eof = 1;
-	*start = page + off;
-	size -= off;
-	if (size>count) size = count;
-	if (size<0) size = 0;
-
-	return_VALUE(size);
+	return 0;
 }
 
+static int acpi_system_sleep_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_system_sleep_seq_show, PDE(inode)->data);
+}
 
 static int
 acpi_system_write_sleep (
@@ -349,25 +350,12 @@ acpi_system_write_sleep (
 	return_VALUE(count);
 }
 
-
-static int
-acpi_system_read_alarm (
-	char                    *page,
-	char                    **start,
-	off_t                   off,
-	int                     count,
-	int                     *eof,
-	void                    *context)
+static int acpi_system_alarm_seq_show(struct seq_file *seq, void *offset)
 {
-	char			*p = page;
-	int			size = 0;
 	u32			sec, min, hr;
 	u32			day, mo, yr;
 
-	ACPI_FUNCTION_TRACE("acpi_system_read_alarm");
-
-	if (off != 0)
-		goto end;
+	ACPI_FUNCTION_TRACE("acpi_system_alarm_seq_show");
 
 	spin_lock(&rtc_lock);
 
@@ -427,21 +415,19 @@ acpi_system_read_alarm (
 	yr += 2000;
 #endif
 
-	p += sprintf(p,"%4.4u-", yr);
-	p += (mo > 12)  ? sprintf(p, "**-")  : sprintf(p, "%2.2u-", mo);
-	p += (day > 31) ? sprintf(p, "** ")  : sprintf(p, "%2.2u ", day);
-	p += (hr > 23)  ? sprintf(p, "**:")  : sprintf(p, "%2.2u:", hr);
-	p += (min > 59) ? sprintf(p, "**:")  : sprintf(p, "%2.2u:", min);
-	p += (sec > 59) ? sprintf(p, "**\n") : sprintf(p, "%2.2u\n", sec);
-
- end:
-	size = p - page;
-	if (size < count) *eof = 1;
-	else if (size > count) size = count;
-	if (size < 0) size = 0;
-	*start = page;
-
-	return_VALUE(size);
+	seq_printf(seq,"%4.4u-", yr);
+	(mo > 12)  ? seq_puts(seq, "**-")  : seq_printf(seq, "%2.2u-", mo);
+	(day > 31) ? seq_puts(seq, "** ")  : seq_printf(seq, "%2.2u ", day);
+	(hr > 23)  ? seq_puts(seq, "**:")  : seq_printf(seq, "%2.2u:", hr);
+	(min > 59) ? seq_puts(seq, "**:")  : seq_printf(seq, "%2.2u:", min);
+	(sec > 59) ? seq_puts(seq, "**\n") : seq_printf(seq, "%2.2u\n", sec);
+
+	return 0;
+}
+
+static int acpi_system_alarm_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_system_alarm_seq_show, PDE(inode)->data);
 }
 
 
@@ -687,7 +673,7 @@ static int __init acpi_sleep_init(void)
 			"Unable to create '%s' fs entry\n",
 			ACPI_SYSTEM_FILE_SLEEP));
 	else {
-		entry->read_proc = acpi_system_read_sleep;
+		entry->proc_fops = &acpi_system_sleep_fops;
 		entry->write_proc = acpi_system_write_sleep;
 	}
 
@@ -699,7 +685,7 @@ static int __init acpi_sleep_init(void)
 			"Unable to create '%s' fs entry\n",
 			ACPI_SYSTEM_FILE_ALARM));
 	else {
-		entry->read_proc = acpi_system_read_alarm;
+		entry->proc_fops = &acpi_system_alarm_fops;
 		entry->write_proc = acpi_system_write_alarm;
 	}
 

drivers/acpi/thermal.c

@@ -39,6 +39,7 @@
 #include <linux/proc_fs.h>
 #include <linux/sched.h>
 #include <linux/kmod.h>
+#include <linux/seq_file.h>
 #include "acpi_bus.h"
 #include "acpi_drivers.h"
 
@@ -79,6 +80,11 @@ MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds.\n");
 
 static int acpi_thermal_add (struct acpi_device *device);
 static int acpi_thermal_remove (struct acpi_device *device, int type);
+static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file);
+static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file);
+static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file);
+static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file);
+static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file);
 
 static struct acpi_driver acpi_thermal_driver = {
 	.name =		ACPI_THERMAL_DRIVER_NAME,
@@ -157,6 +163,40 @@ struct acpi_thermal {
 	struct timer_list	timer;
 };
 
+static struct file_operations acpi_thermal_state_fops = {
+	.open		= acpi_thermal_state_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static struct file_operations acpi_thermal_temp_fops = {
+	.open		= acpi_thermal_temp_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static struct file_operations acpi_thermal_trip_fops = {
+	.open		= acpi_thermal_trip_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static struct file_operations acpi_thermal_cooling_fops = {
+	.open		= acpi_thermal_cooling_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static struct file_operations acpi_thermal_polling_fops = {
+	.open		= acpi_thermal_polling_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 
 /* --------------------------------------------------------------------------
                              Thermal Zone Management
@@ -720,154 +760,119 @@ acpi_thermal_check (
 
 struct proc_dir_entry		*acpi_thermal_dir = NULL;
 
-
-static int
-acpi_thermal_read_state (
-	char			*page,
-	char			**start,
-	off_t			off,
-	int 			count,
-	int 			*eof,
-	void			*data)
+static int acpi_thermal_state_seq_show(struct seq_file *seq, void *offset)
 {
-	struct acpi_thermal	*tz = (struct acpi_thermal *) data;
-	char			*p = page;
-	int			len = 0;
+	struct acpi_thermal	*tz = (struct acpi_thermal *)seq->private;
 
-	ACPI_FUNCTION_TRACE("acpi_thermal_read_state");
+	ACPI_FUNCTION_TRACE("acpi_thermal_state_seq_show");
 
-	if (!tz || (off != 0))
+	if (!tz)
 		goto end;
 
-	p += sprintf(p, "state:                   ");
+	seq_puts(seq, "state:                   ");
 
 	if (!tz->state.critical && !tz->state.hot && !tz->state.passive && !tz->state.active)
-		p += sprintf(p, "ok\n");
+		seq_puts(seq, "ok\n");
 	else {
 		if (tz->state.critical)
-			p += sprintf(p, "critical ");
+			seq_puts(seq, "critical ");
 		if (tz->state.hot)
-			p += sprintf(p, "hot ");
+			seq_puts(seq, "hot ");
 		if (tz->state.passive)
-			p += sprintf(p, "passive ");
+			seq_puts(seq, "passive ");
 		if (tz->state.active)
-			p += sprintf(p, "active[%d]", tz->state.active_index);
-		p += sprintf(p, "\n");
+			seq_printf(seq, "active[%d]", tz->state.active_index);
+		seq_puts(seq, "\n");
 	}
 
 end:
-	len = (p - page);
-	if (len <= off+count) *eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-
-	return_VALUE(len);
+	return 0;
 }
 
+static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_thermal_state_seq_show, PDE(inode)->data);
+}
 
-static int
-acpi_thermal_read_temperature (
-	char			*page,
-	char			**start,
-	off_t			off,
-	int 			count,
-	int 			*eof,
-	void			*data)
+
+static int acpi_thermal_temp_seq_show(struct seq_file *seq, void *offset)
 {
 	int			result = 0;
-	struct acpi_thermal	*tz = (struct acpi_thermal *) data;
-	char			*p = page;
-	int			len = 0;
+	struct acpi_thermal	*tz = (struct acpi_thermal *)seq->private;
 
-	ACPI_FUNCTION_TRACE("acpi_thermal_read_temperature");
+	ACPI_FUNCTION_TRACE("acpi_thermal_temp_seq_show");
 
-	if (!tz || (off != 0))
+	if (!tz)
 		goto end;
 
 	result = acpi_thermal_get_temperature(tz);
 	if (result)
 		goto end;
 
-	p += sprintf(p, "temperature:             %ld C\n", 
+	seq_printf(seq, "temperature:             %ld C\n", 
 		KELVIN_TO_CELSIUS(tz->temperature));
-	
+
 end:
-	len = (p - page);
-	if (len <= off+count) *eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-
-	return_VALUE(len);
+	return 0;
 }
 
+static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_thermal_temp_seq_show, PDE(inode)->data);
+}
 
-static int
-acpi_thermal_read_trip_points (
-	char			*page,
-	char			**start,
-	off_t			off,
-	int 			count,
-	int 			*eof,
-	void			*data)
+
+static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset)
 {
-	struct acpi_thermal	*tz = (struct acpi_thermal *) data;
-	char			*p = page;
-	int			len = 0;
+	struct acpi_thermal	*tz = (struct acpi_thermal *)seq->private;
 	int			i = 0;
 	int			j = 0;
 
-	ACPI_FUNCTION_TRACE("acpi_thermal_read_trip_points");
+	ACPI_FUNCTION_TRACE("acpi_thermal_trip_seq_show");
 
-	if (!tz || (off != 0))
+	if (!tz)
 		goto end;
 
 	if (tz->trips.critical.flags.valid)
-		p += sprintf(p, "critical (S5):           %ld C\n",
+		seq_printf(seq, "critical (S5):           %ld C\n",
 			KELVIN_TO_CELSIUS(tz->trips.critical.temperature));
 
 	if (tz->trips.hot.flags.valid)
-		p += sprintf(p, "hot (S4):                %ld C\n",
+		seq_printf(seq, "hot (S4):                %ld C\n",
 			KELVIN_TO_CELSIUS(tz->trips.hot.temperature));
 
 	if (tz->trips.passive.flags.valid) {
-		p += sprintf(p, "passive:                 %ld C: tc1=%lu tc2=%lu tsp=%lu devices=",
+		seq_printf(seq, "passive:                 %ld C: tc1=%lu tc2=%lu tsp=%lu devices=",
 			KELVIN_TO_CELSIUS(tz->trips.passive.temperature),
 			tz->trips.passive.tc1,
 			tz->trips.passive.tc2, 
 			tz->trips.passive.tsp);
 		for (j=0; j<tz->trips.passive.devices.count; j++) {
 
-			p += sprintf(p, "0x%p ", tz->trips.passive.devices.handles[j]);
+			seq_printf(seq, "0x%p ", tz->trips.passive.devices.handles[j]);
 		}
-		p += sprintf(p, "\n");
+		seq_puts(seq, "\n");
 	}
 
-	for (i=0; i<ACPI_THERMAL_MAX_ACTIVE; i++) {
+	for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
 		if (!(tz->trips.active[i].flags.valid))
 			break;
-		p += sprintf(p, "active[%d]:               %ld C: devices=",
+		seq_printf(seq, "active[%d]:               %ld C: devices=",
 			i, KELVIN_TO_CELSIUS(tz->trips.active[i].temperature));
-		for (j=0; j<tz->trips.active[i].devices.count; j++) 
-			p += sprintf(p, "0x%p ",
+		for (j = 0; j < tz->trips.active[i].devices.count; j++) 
+			seq_printf(seq, "0x%p ",
 				tz->trips.active[i].devices.handles[j]);
-		p += sprintf(p, "\n");
+		seq_puts(seq, "\n");
 	}
 
 end:
-	len = (p - page);
-	if (len <= off+count) *eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-
-	return_VALUE(len);
+	return 0;
 }
 
+static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_thermal_trip_seq_show, PDE(inode)->data);
+}
 
 static int
 acpi_thermal_write_trip_points (
@@ -909,43 +914,32 @@ acpi_thermal_write_trip_points (
 }
 
 
-static int
-acpi_thermal_read_cooling_mode (
-	char			*page,
-	char			**start,
-	off_t			off,
-	int 			count,
-	int 			*eof,
-	void			*data)
+static int acpi_thermal_cooling_seq_show(struct seq_file *seq, void *offset)
 {
-	struct acpi_thermal	*tz = (struct acpi_thermal *) data;
-	char			*p = page;
-	int			len = 0;
+	struct acpi_thermal	*tz = (struct acpi_thermal *)seq->private;
 
-	ACPI_FUNCTION_TRACE("acpi_thermal_read_cooling_mode");
+	ACPI_FUNCTION_TRACE("acpi_thermal_cooling_seq_show");
 
-	if (!tz || (off != 0))
+	if (!tz)
 		goto end;
 
 	if (!tz->flags.cooling_mode) {
-		p += sprintf(p, "<not supported>\n");
+		seq_puts(seq, "<not supported>\n");
 		goto end;
 	}
 
-	p += sprintf(p, "cooling mode:            %s\n",
+	seq_printf(seq, "cooling mode:            %s\n",
 		tz->cooling_mode?"passive":"active");
 
 end:
-	len = (p - page);
-	if (len <= off+count) *eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-
-	return_VALUE(len);
+	return 0;
 }
 
+static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_thermal_cooling_seq_show,
+							PDE(inode)->data);
+}
 
 static int
 acpi_thermal_write_cooling_mode (
@@ -980,43 +974,32 @@ acpi_thermal_write_cooling_mode (
 }
 
 
-static int
-acpi_thermal_read_polling (
-	char			*page,
-	char			**start,
-	off_t			off,
-	int 			count,
-	int 			*eof,
-	void			*data)
+static int acpi_thermal_polling_seq_show(struct seq_file *seq, void *offset)
 {
-	struct acpi_thermal	*tz = (struct acpi_thermal *) data;
-	char			*p = page;
-	int			len = 0;
+	struct acpi_thermal	*tz = (struct acpi_thermal *)seq->private;
 
-	ACPI_FUNCTION_TRACE("acpi_thermal_read_polling");
+	ACPI_FUNCTION_TRACE("acpi_thermal_polling_seq_show");
 
-	if (!tz || (off != 0))
+	if (!tz)
 		goto end;
 
 	if (!tz->polling_frequency) {
-		p += sprintf(p, "<polling disabled>\n");
+		seq_puts(seq, "<polling disabled>\n");
 		goto end;
 	}
 
-	p += sprintf(p, "polling frequency:       %lu seconds\n",
+	seq_printf(seq, "polling frequency:       %lu seconds\n",
 		(tz->polling_frequency / 10));
 
 end:
-	len = (p - page);
-	if (len <= off+count) *eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-
-	return_VALUE(len);
+	return 0;
 }
 
+static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_thermal_polling_seq_show,
+							PDE(inode)->data);
+}
 
 static int
 acpi_thermal_write_polling (
@@ -1075,7 +1058,7 @@ acpi_thermal_add_fs (
 			"Unable to create '%s' fs entry\n",
 			ACPI_THERMAL_FILE_STATE));
 	else {
-		entry->read_proc = acpi_thermal_read_state;
+		entry->proc_fops = &acpi_thermal_state_fops;
 		entry->data = acpi_driver_data(device);
 	}
 
@@ -1087,7 +1070,7 @@ acpi_thermal_add_fs (
 			"Unable to create '%s' fs entry\n",
 			ACPI_THERMAL_FILE_TEMPERATURE));
 	else {
-		entry->read_proc = acpi_thermal_read_temperature;
+		entry->proc_fops = &acpi_thermal_temp_fops;
 		entry->data = acpi_driver_data(device);
 	}
 
@@ -1099,7 +1082,7 @@ acpi_thermal_add_fs (
 			"Unable to create '%s' fs entry\n",
 			ACPI_THERMAL_FILE_POLLING_FREQ));
 	else {
-		entry->read_proc = acpi_thermal_read_trip_points;
+		entry->proc_fops = &acpi_thermal_trip_fops;
 		entry->write_proc = acpi_thermal_write_trip_points;
 		entry->data = acpi_driver_data(device);
 	}
@@ -1112,7 +1095,7 @@ acpi_thermal_add_fs (
 			"Unable to create '%s' fs entry\n",
 			ACPI_THERMAL_FILE_COOLING_MODE));
 	else {
-		entry->read_proc = acpi_thermal_read_cooling_mode;
+		entry->proc_fops = &acpi_thermal_cooling_fops;
 		entry->write_proc = acpi_thermal_write_cooling_mode;
 		entry->data = acpi_driver_data(device);
 	}
@@ -1125,7 +1108,7 @@ acpi_thermal_add_fs (
 			"Unable to create '%s' fs entry\n",
 			ACPI_THERMAL_FILE_POLLING_FREQ));
 	else {
-		entry->read_proc = acpi_thermal_read_polling;
+		entry->proc_fops = &acpi_thermal_polling_fops;
 		entry->write_proc = acpi_thermal_write_polling;
 		entry->data = acpi_driver_data(device);
 	}

drivers/acpi/toshiba_acpi.c

@@ -41,6 +41,7 @@
 #include <linux/init.h>
 #include <linux/types.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/version.h>
 
 #include <acconfig.h>
@@ -100,6 +101,47 @@ MODULE_LICENSE("GPL");
 #define HCI_VIDEO_OUT_CRT		0x2
 #define HCI_VIDEO_OUT_TV		0x4
 
+static int toshiba_lcd_open_fs(struct inode *inode, struct file *file);
+static int toshiba_video_open_fs(struct inode *inode, struct file *file);
+static int toshiba_fan_open_fs(struct inode *inode, struct file *file);
+static int toshiba_keys_open_fs(struct inode *inode, struct file *file);
+static int toshiba_version_open_fs(struct inode *inode, struct file *file);
+
+static struct file_operations toshiba_lcd_fops = {
+	.open		= toshiba_lcd_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static struct file_operations toshiba_video_fops = {
+	.open		= toshiba_video_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static struct file_operations toshiba_fan_fops = {
+	.open		= toshiba_fan_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static struct file_operations toshiba_keys_fops = {
+	.open		= toshiba_keys_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static struct file_operations toshiba_version_fops = {
+	.open		= toshiba_version_open_fs,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 /* utility
  */
 
@@ -126,22 +168,6 @@ snscanf(const char* str, int n, const char* format, ...)
 	return result;
 }
 
-/* This is the common code at the end of every proc read handler.  I don't
- * understand it yet.
- */
-static int
-end_proc_read(const char* p, char* page, off_t off, int count,
-	char** start, int* eof)
-{
-	int len = (p - page);
-	if (len <= off+count) *eof = 1;
-	*start = page + off;
-	len -= off;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-	return len;
-}
-
 /* acpi interface wrappers
  */
 
@@ -259,29 +285,27 @@ static int			key_event_valid;
 /* proc file handlers
  */
 
-static int
-proc_read_lcd(char* page, char** start, off_t off, int count, int* eof,
-	void* context)
+static int toshiba_lcd_seq_show(struct seq_file *seq, void *offset)
 {
-	char* p = page;
 	u32 hci_result;
 	u32 value;
 
-	if (off != 0) goto end;
-
 	hci_read1(HCI_LCD_BRIGHTNESS, &value, &hci_result);
 	if (hci_result == HCI_SUCCESS) {
 		value = value >> HCI_LCD_BRIGHTNESS_SHIFT;
-		p += sprintf(p, "brightness:              %d\n", value);
-		p += sprintf(p, "brightness_levels:       %d\n",
-			HCI_LCD_BRIGHTNESS_LEVELS);
-	} else {
-		p += sprintf(p, "ERROR\n");
-		goto end;
-	}
+		seq_printf(seq, "brightness:              %d\n"
+				"brightness_levels:       %d\n",
+				value,
+				HCI_LCD_BRIGHTNESS_LEVELS);
+	} else
+		seq_puts(seq, "ERROR\n");
+
+	return 0;
+}
 
-end:
-	return end_proc_read(p, page, off, count, start, eof);
+static int toshiba_lcd_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, toshiba_lcd_seq_show, NULL);
 }
 
 static int
@@ -306,31 +330,31 @@ proc_write_lcd(struct file* file, const char* buffer, unsigned long count,
 	return count;
 }
 
-static int
-proc_read_video(char* page, char** start, off_t off, int count, int* eof,
-	void* context)
+static int toshiba_video_seq_show(struct seq_file *seq, void *offset)
 {
-	char* p = page;
 	u32 hci_result;
 	u32 value;
 
-	if (off != 0) goto end;
-
 	hci_read1(HCI_VIDEO_OUT, &value, &hci_result);
 	if (hci_result == HCI_SUCCESS) {
 		int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
 		int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
 		int is_tv  = (value & HCI_VIDEO_OUT_TV ) ? 1 : 0;
-		p += sprintf(p, "lcd_out:                 %d\n", is_lcd);
-		p += sprintf(p, "crt_out:                 %d\n", is_crt);
-		p += sprintf(p, "tv_out:                  %d\n", is_tv);
-	} else {
-		p += sprintf(p, "ERROR\n");
-		goto end;
-	}
+		seq_printf(seq, "lcd_out:                 %d\n"
+				"crt_out:                 %d\n"
+				"tv_out:                  %d\n",
+				is_lcd,
+				is_crt,
+				is_tv);
+	} else
+		seq_puts(seq, "ERROR\n");
+
+	return 0;
+}
 
-end:
-	return end_proc_read(p, page, off, count, start, eof);
+static int toshiba_video_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, toshiba_video_seq_show, NULL);
 }
 
 static int
@@ -376,27 +400,26 @@ proc_write_video(struct file* file, const char* buffer, unsigned long count,
 	return count;
 }
 
-static int
-proc_read_fan(char* page, char** start, off_t off, int count, int* eof,
-	void* context)
+static int toshiba_fan_seq_show(struct seq_file *seq, void *offset)
 {
-	char* p = page;
 	u32 hci_result;
 	u32 value;
 
-	if (off != 0) goto end;
-
 	hci_read1(HCI_FAN, &value, &hci_result);
 	if (hci_result == HCI_SUCCESS) {
-		p += sprintf(p, "running:                 %d\n", (value > 0));
-		p += sprintf(p, "force_on:                %d\n", force_fan);
-	} else {
-		p += sprintf(p, "ERROR\n");
-		goto end;
-	}
+		seq_printf(seq, "running:                 %d\n"
+				"force_on:                %d\n",
+				(value > 0),
+				force_fan);
+	} else
+		seq_puts(seq, "ERROR\n");
+
+	return 0;
+}
 
-end:
-	return end_proc_read(p, page, off, count, start, eof);
+static int toshiba_fan_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, toshiba_fan_seq_show, NULL);
 }
 
 static int
@@ -420,16 +443,11 @@ proc_write_fan(struct file* file, const char* buffer, unsigned long count,
 	return count;
 }
 
-static int
-proc_read_keys(char* page, char** start, off_t off, int count, int* eof,
-	void* context)
+static int toshiba_keys_seq_show(struct seq_file *seq, void *offset)
 {
-	char* p = page;
 	u32 hci_result;
 	u32 value;
 
-	if (off != 0) goto end;
-
 	if (!key_event_valid) {
 		hci_read1(HCI_SYSTEM_EVENT, &value, &hci_result);
 		if (hci_result == HCI_SUCCESS) {
@@ -438,16 +456,23 @@ proc_read_keys(char* page, char** start, off_t off, int count, int* eof,
 		} else if (hci_result == HCI_EMPTY) {
 			/* better luck next time */
 		} else {
-			p += sprintf(p, "ERROR\n");
+			seq_puts(seq, "ERROR\n");
 			goto end;
 		}
 	}
 
-	p += sprintf(p, "hotkey_ready:            %d\n", key_event_valid);
-	p += sprintf(p, "hotkey:                  0x%04x\n", last_key_event);
+	seq_printf(seq, "hotkey_ready:            %d\n"
+			"hotkey:                  0x%04x\n",
+			key_event_valid,
+			last_key_event);
 
 end:
-	return end_proc_read(p, page, off, count, start, eof);
+	return 0;
+}
+
+static int toshiba_keys_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, toshiba_keys_seq_show, NULL);
 }
 
 static int
@@ -466,20 +491,19 @@ proc_write_keys(struct file* file, const char* buffer, unsigned long count,
 	return count;
 }
 
-static int
-proc_read_version(char* page, char** start, off_t off, int count, int* eof,
-	void* context)
+static int toshiba_version_seq_show(struct seq_file *seq, void *offset)
 {
-	char* p = page;
-
-	if (off != 0) goto end;
+	seq_printf(seq, "driver:                  %s\n"
+			"proc_interface:          %d\n",
+			TOSHIBA_ACPI_VERSION,
+			PROC_INTERFACE_VERSION);
 
-	p += sprintf(p, "driver:                  %s\n", TOSHIBA_ACPI_VERSION);
-	p += sprintf(p, "proc_interface:          %d\n",
-		PROC_INTERFACE_VERSION);
+	return 0;
+}
 
-end:
-	return end_proc_read(p, page, off, count, start, eof);
+static int toshiba_version_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, toshiba_version_seq_show, NULL);
 }
 
 /* proc and module init
@@ -490,24 +514,38 @@ add_device(void)
 {
 	struct proc_dir_entry* proc;
 
-	proc = create_proc_read_entry(PROC_LCD, S_IFREG | S_IRUGO | S_IWUSR,
-		toshiba_proc_dir, proc_read_lcd, 0);
-	if (proc) proc->write_proc = proc_write_lcd;
+	proc = create_proc_entry(PROC_LCD, S_IFREG | S_IRUGO | S_IWUSR,
+		toshiba_proc_dir);
+	if (proc) {
+		proc->proc_fops = &toshiba_lcd_fops;
+		proc->write_proc = proc_write_lcd;
+	}
 
-	proc = create_proc_read_entry(PROC_VIDEO, S_IFREG | S_IRUGO | S_IWUSR,
-		toshiba_proc_dir, proc_read_video, 0);
-	if (proc) proc->write_proc = proc_write_video;
+	proc = create_proc_entry(PROC_VIDEO, S_IFREG | S_IRUGO | S_IWUSR,
+		toshiba_proc_dir);
+	if (proc) {
+		proc->proc_fops = &toshiba_video_fops;
+		proc->write_proc = proc_write_video;
+	}
 
-	proc = create_proc_read_entry(PROC_FAN, S_IFREG | S_IRUGO | S_IWUSR,
-		toshiba_proc_dir, proc_read_fan, 0);
-	if (proc) proc->write_proc = proc_write_fan;
+	proc = create_proc_entry(PROC_FAN, S_IFREG | S_IRUGO | S_IWUSR,
+		toshiba_proc_dir);
+	if (proc) {
+		proc->proc_fops = &toshiba_fan_fops;
+		proc->write_proc = proc_write_fan;
+	}
 
-	proc = create_proc_read_entry(PROC_KEYS, S_IFREG | S_IRUGO | S_IWUSR,
-		toshiba_proc_dir, proc_read_keys, 0);
-	if (proc) proc->write_proc = proc_write_keys;
+	proc = create_proc_entry(PROC_KEYS, S_IFREG | S_IRUGO | S_IWUSR,
+		toshiba_proc_dir);
+	if (proc) {
+		proc->proc_fops = &toshiba_keys_fops;
+		proc->write_proc = proc_write_keys;
+	}
 
-	proc = create_proc_read_entry(PROC_VERSION, S_IFREG | S_IRUGO | S_IWUSR,
-		toshiba_proc_dir, proc_read_version, 0);
+	proc = create_proc_entry(PROC_VERSION, S_IFREG | S_IRUGO | S_IWUSR,
+		toshiba_proc_dir);
+	if (proc)
+		proc->proc_fops = &toshiba_version_fops;
 
 	return(AE_OK);
 }

drivers/acpi/utilities/utcopy.c

 /******************************************************************************
  *
  * Module Name: utcopy - Internal to external object translation utilities
- *              $Revision: 105 $
+ *              $Revision: 106 $
  *
  *****************************************************************************/
 
@@ -419,7 +419,8 @@ acpi_ut_copy_esimple_to_isimple (
 
 	case ACPI_TYPE_STRING:
 
-		internal_object->string.pointer = ACPI_MEM_CALLOCATE ((ACPI_SIZE) external_object->string.length + 1);
+		internal_object->string.pointer =
+			ACPI_MEM_CALLOCATE ((ACPI_SIZE) external_object->string.length + 1);
 		if (!internal_object->string.pointer) {
 			return_ACPI_STATUS (AE_NO_MEMORY);
 		}
@@ -434,7 +435,8 @@ acpi_ut_copy_esimple_to_isimple (
 
 	case ACPI_TYPE_BUFFER:
 
-		internal_object->buffer.pointer = ACPI_MEM_CALLOCATE (external_object->buffer.length);
+		internal_object->buffer.pointer =
+			ACPI_MEM_CALLOCATE (external_object->buffer.length);
 		if (!internal_object->buffer.pointer) {
 			return_ACPI_STATUS (AE_NO_MEMORY);
 		}
@@ -471,10 +473,10 @@ acpi_ut_copy_esimple_to_isimple (
  * FUNCTION:    Acpi_ut_copy_epackage_to_ipackage
  *
  * PARAMETERS:  *Internal_object   - Pointer to the object we are returning
- *              *Buffer         - Where the object is returned
- *              *Space_used     - Where the length of the object is returned
+ *              *Buffer            - Where the object is returned
+ *              *Space_used        - Where the length of the object is returned
  *
- * RETURN:      Status          - the status of the call
+ * RETURN:      Status
  *
  * DESCRIPTION: This function is called to place a package object in a user
  *              buffer.  A package object by definition contains other objects.
@@ -607,7 +609,8 @@ acpi_ut_copy_simple_object (
 
 	/* Copy the entire source object over the destination object*/
 
-	ACPI_MEMCPY ((char *) dest_desc, (char *) source_desc, sizeof (acpi_operand_object));
+	ACPI_MEMCPY ((char *) dest_desc, (char *) source_desc,
+			  sizeof (acpi_operand_object));
 
 	/* Restore the saved fields */
 
@@ -687,26 +690,36 @@ acpi_ut_copy_ielement_to_ielement (
 			   &state->pkg.dest_object->package.elements[this_index];
 
 	switch (object_type) {
-	case 0:
+	case ACPI_COPY_TYPE_SIMPLE:
 
-		/*
-		 * This is a simple object, just copy it
-		 */
-		target_object = acpi_ut_create_internal_object (ACPI_GET_OBJECT_TYPE (source_object));
-		if (!target_object) {
-			return (AE_NO_MEMORY);
-		}
+		/* A null source object indicates a (legal) null package element */
 
-		status = acpi_ut_copy_simple_object (source_object, target_object);
-		if (ACPI_FAILURE (status)) {
-			return (status);
+		if (source_object) {
+			/*
+			 * This is a simple object, just copy it
+			 */
+			target_object = acpi_ut_create_internal_object (
+					   ACPI_GET_OBJECT_TYPE (source_object));
+			if (!target_object) {
+				return (AE_NO_MEMORY);
+			}
+
+			status = acpi_ut_copy_simple_object (source_object, target_object);
+			if (ACPI_FAILURE (status)) {
+				return (status);
+			}
+
+			*this_target_ptr = target_object;
 		}
+		else {
+			/* Pass through a null element */
 
-		*this_target_ptr = target_object;
+			*this_target_ptr = NULL;
+		}
 		break;
 
 
-	case 1:
+	case ACPI_COPY_TYPE_PACKAGE:
 
 		/*
 		 * This object is a package - go down another nesting level
@@ -720,6 +733,17 @@ acpi_ut_copy_ielement_to_ielement (
 		target_object->package.count = source_object->package.count;
 		target_object->common.flags = source_object->common.flags;
 
+		/*
+		 * Create the object array
+		 */
+		target_object->package.elements =
+			ACPI_MEM_CALLOCATE (((ACPI_SIZE) source_object->package.count + 1) *
+					 sizeof (void *));
+		if (!target_object->package.elements) {
+			ACPI_MEM_FREE (target_object);
+			return (AE_NO_MEMORY);
+		}
+
 		/*
 		 * Pass the new package object back to the package walk routine
 		 */

drivers/acpi/utilities/utmisc.c

 /*******************************************************************************
  *
  * Module Name: utmisc - common utility procedures
- *              $Revision: 86 $
+ *              $Revision: 87 $
  *
  ******************************************************************************/
 
@@ -475,7 +475,6 @@ acpi_ut_strupr (
 		string++;
 	}
 
-
 	return (src_string);
 }
 
@@ -575,7 +574,6 @@ acpi_ut_create_mutex (
 		return_ACPI_STATUS (AE_BAD_PARAMETER);
 	}
 
-
 	if (!acpi_gbl_acpi_mutex_info[mutex_id].mutex) {
 		status = acpi_os_create_semaphore (1, 1,
 				  &acpi_gbl_acpi_mutex_info[mutex_id].mutex);
@@ -613,7 +611,6 @@ acpi_ut_delete_mutex (
 		return_ACPI_STATUS (AE_BAD_PARAMETER);
 	}
 
-
 	status = acpi_os_delete_semaphore (acpi_gbl_acpi_mutex_info[mutex_id].mutex);
 
 	acpi_gbl_acpi_mutex_info[mutex_id].mutex = NULL;
@@ -651,7 +648,6 @@ acpi_ut_acquire_mutex (
 		return (AE_BAD_PARAMETER);
 	}
 
-
 	this_thread_id = acpi_os_get_thread_id ();
 
 	/*
@@ -679,7 +675,6 @@ acpi_ut_acquire_mutex (
 		}
 	}
 
-
 	ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX,
 			 "Thread %X attempting to acquire Mutex [%s]\n",
 			 this_thread_id, acpi_ut_get_mutex_name (mutex_id)));
@@ -693,7 +688,6 @@ acpi_ut_acquire_mutex (
 		acpi_gbl_acpi_mutex_info[mutex_id].use_count++;
 		acpi_gbl_acpi_mutex_info[mutex_id].owner_id = this_thread_id;
 	}
-
 	else {
 		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Thread %X could not acquire Mutex [%s] %s\n",
 				 this_thread_id, acpi_ut_get_mutex_name (mutex_id),
@@ -737,7 +731,6 @@ acpi_ut_release_mutex (
 		return (AE_BAD_PARAMETER);
 	}
 
-
 	/*
 	 * Mutex must be acquired in order to release it!
 	 */
@@ -749,7 +742,6 @@ acpi_ut_release_mutex (
 		return (AE_NOT_ACQUIRED);
 	}
 
-
 	/*
 	 * Deadlock prevention.  Check if this thread owns any mutexes of value
 	 * greater than this one.  If so, the thread has violated the mutex
@@ -770,7 +762,6 @@ acpi_ut_release_mutex (
 		}
 	}
 
-
 	/* Mark unlocked FIRST */
 
 	acpi_gbl_acpi_mutex_info[mutex_id].owner_id = ACPI_MUTEX_NOT_ACQUIRED;
@@ -828,7 +819,6 @@ acpi_ut_create_update_state_and_push (
 		return (AE_NO_MEMORY);
 	}
 
-
 	acpi_ut_push_generic_state (state_list, state);
 	return (AE_OK);
 }
@@ -866,7 +856,6 @@ acpi_ut_create_pkg_state_and_push (
 		return (AE_NO_MEMORY);
 	}
 
-
 	acpi_ut_push_generic_state (state_list, state);
 	return (AE_OK);
 }
@@ -1129,7 +1118,6 @@ acpi_ut_create_control_state (
 		return_PTR (NULL);
 	}
 
-
 	/* Init fields specific to the control struct */
 
 	state->common.data_type = ACPI_DESC_TYPE_STATE_CONTROL;
@@ -1224,6 +1212,8 @@ acpi_ut_walk_package_tree (
 	}
 
 	while (state) {
+		/* Get one element of the package */
+
 		this_index    = state->pkg.index;
 		this_source_obj = (acpi_operand_object *)
 				  state->pkg.source_object->package.elements[this_index];
@@ -1324,6 +1314,7 @@ acpi_ut_generate_checksum (
 	u32                     i;
 	signed char             sum = 0;
 
+
 	for (i = 0; i < length; i++) {
 		sum = (signed char) (sum + buffer[i]);
 	}