[sysfs] Add __user tag to appropriate parameters.

From Greg Kroah-Hartman

fs/sysfs/bin.c

@@ -22,7 +22,7 @@ fill_read(struct dentry *dentry, char *buffer, loff_t off, size_t count)
 }
 
 static ssize_t
-read(struct file * file, char * userbuf, size_t count, loff_t * off)
+read(struct file * file, char __user * userbuf, size_t count, loff_t * off)
 {
 	char *buffer = file->private_data;
 	struct dentry *dentry = file->f_dentry;
@@ -65,7 +65,7 @@ flush_write(struct dentry *dentry, char *buffer, loff_t offset, size_t count)
 	return attr->write(kobj, buffer, offset, count);
 }
 
-static ssize_t write(struct file * file, const char * userbuf,
+static ssize_t write(struct file * file, const char __user * userbuf,
 		     size_t count, loff_t * off)
 {
 	char *buffer = file->private_data;

fs/sysfs/file.c

@@ -109,7 +109,7 @@ static int fill_read_buffer(struct file * file, struct sysfs_buffer * buffer)
  *	the amount they specify each time.
  *	This may be called continuously until the buffer is empty.
  */
-static int flush_read_buffer(struct sysfs_buffer * buffer, char * buf, 
+static int flush_read_buffer(struct sysfs_buffer * buffer, char __user * buf,
 			     size_t count, loff_t * ppos)
 {
 	int error;
@@ -143,7 +143,7 @@ static int flush_read_buffer(struct sysfs_buffer * buffer, char * buf,
  */
 
 static ssize_t
-sysfs_read_file(struct file *file, char *buf, size_t count, loff_t *ppos)
+sysfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 {
 	struct sysfs_buffer * buffer = file->private_data;
 	ssize_t retval = 0;
@@ -169,7 +169,7 @@ sysfs_read_file(struct file *file, char *buf, size_t count, loff_t *ppos)
  */
 
 static int 
-fill_write_buffer(struct sysfs_buffer * buffer, const char * buf, size_t count)
+fill_write_buffer(struct sysfs_buffer * buffer, const char __user * buf, size_t count)
 {
 	int error;
 
@@ -224,7 +224,7 @@ flush_write_buffer(struct file * file, struct sysfs_buffer * buffer, size_t coun
  */
 
 static ssize_t
-sysfs_write_file(struct file *file, const char *buf, size_t count, loff_t *ppos)
+sysfs_write_file(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
 {
 	struct sysfs_buffer * buffer = file->private_data;