acpi: fix recently introduced proc-related bugs.

Recently, the acpi proc files were changed to use the seq_file interface.
As a result of this, the write methods became top-level write() methods
(i.e. not called by the proc layer). 

Whoever made these changes, did not take into account that the parameters 
passed to these changed. The fourth parameter previously was a void*, that
pointed to the private data for the owner of the file, and some of the 
methods still expected this, even though the parameter is now an loff_t*,
and points to the offset into the file that is being written. Huge Bug. 

This fixes the broken methods to look in the same place as the other 
methods (i.e. in the file's private data).
 

drivers/acpi/thermal.c

@@ -82,8 +82,11 @@ 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_write_trip_points (struct file*,const char *,size_t,loff_t *);
 static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file);
+static int acpi_thermal_write_cooling_mode (struct file*,const char *,size_t,loff_t *);
 static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file);
+static int acpi_thermal_write_polling(struct file*,const char *,size_t,loff_t *);
 
 static struct acpi_driver acpi_thermal_driver = {
 	.name =		ACPI_THERMAL_DRIVER_NAME,
@@ -179,6 +182,7 @@ static struct file_operations acpi_thermal_temp_fops = {
 static struct file_operations acpi_thermal_trip_fops = {
 	.open		= acpi_thermal_trip_open_fs,
 	.read		= seq_read,
+	.write		= acpi_thermal_write_trip_points,
 	.llseek		= seq_lseek,
 	.release	= single_release,
 };
@@ -186,6 +190,7 @@ static struct file_operations acpi_thermal_trip_fops = {
 static struct file_operations acpi_thermal_cooling_fops = {
 	.open		= acpi_thermal_cooling_open_fs,
 	.read		= seq_read,
+	.write		= acpi_thermal_write_cooling_mode,
 	.llseek		= seq_lseek,
 	.release	= single_release,
 };
@@ -193,6 +198,7 @@ static struct file_operations acpi_thermal_cooling_fops = {
 static struct file_operations acpi_thermal_polling_fops = {
 	.open		= acpi_thermal_polling_open_fs,
 	.read		= seq_read,
+	.write		= acpi_thermal_write_polling,
 	.llseek		= seq_lseek,
 	.release	= single_release,
 };
@@ -947,10 +953,11 @@ acpi_thermal_write_cooling_mode (
 	struct file		*file,
 	const char		*buffer,
 	size_t			count,
-	loff_t			*data)
+	loff_t			*ppos)
 {
+	struct seq_file		*m = (struct seq_file *)file->private_data;
+	struct acpi_thermal	*tz = (struct acpi_thermal *)m->private;
 	int			result = 0;
-	struct acpi_thermal	*tz = (struct acpi_thermal *) data;
 	char			mode_string[12] = {'\0'};
 
 	ACPI_FUNCTION_TRACE("acpi_thermal_write_cooling_mode");
@@ -1007,10 +1014,11 @@ acpi_thermal_write_polling (
 	struct file		*file,
 	const char		*buffer,
 	size_t			count,
-	loff_t			*data)
+	loff_t			*ppos)
 {
+	struct seq_file		*m = (struct seq_file *)file->private_data;
+	struct acpi_thermal	*tz = (struct acpi_thermal *)m->private;
 	int			result = 0;
-	struct acpi_thermal	*tz = (struct acpi_thermal *) data;
 	char			polling_string[12] = {'\0'};
 	int			seconds = 0;
 
@@ -1084,7 +1092,6 @@ acpi_thermal_add_fs (
 			ACPI_THERMAL_FILE_TRIP_POINTS));
 	else {
 		entry->proc_fops = &acpi_thermal_trip_fops;
-		entry->proc_fops->write = acpi_thermal_write_trip_points;
 		entry->data = acpi_driver_data(device);
 	}
 
@@ -1097,7 +1104,6 @@ acpi_thermal_add_fs (
 			ACPI_THERMAL_FILE_COOLING_MODE));
 	else {
 		entry->proc_fops = &acpi_thermal_cooling_fops;
-		entry->proc_fops->write = acpi_thermal_write_cooling_mode;
 		entry->data = acpi_driver_data(device);
 	}
 
@@ -1110,7 +1116,6 @@ acpi_thermal_add_fs (
 			ACPI_THERMAL_FILE_POLLING_FREQ));
 	else {
 		entry->proc_fops = &acpi_thermal_polling_fops;
-		entry->proc_fops->write = acpi_thermal_write_polling;
 		entry->data = acpi_driver_data(device);
 	}