simple_open: automatically convert to simple_open()

Many users of debugfs copy the implementation of default_open() when
they want to support a custom read/write function op.  This leads to a
proliferation of the default_open() implementation across the entire
tree.

Now that the common implementation has been consolidated into libfs we
can replace all the users of this function with simple_open().

This replacement was done with the following semantic patch:

<smpl>
@ open @
identifier open_f != simple_open;
identifier i, f;
@@
-int open_f(struct inode *i, struct file *f)
-{
(
-if (i->i_private)
-f->private_data = i->i_private;
|
-f->private_data = i->i_private;
)
-return 0;
-}

@ has_open depends on open @
identifier fops;
identifier open.open_f;
@@
struct file_operations fops = {
...
-.open = open_f,
+.open = simple_open,
...
};
</smpl>

[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/net/wimax/i2400m/debugfs.c

@@ -53,17 +53,6 @@ struct dentry *debugfs_create_netdev_queue_stopped(
 				   &fops_netdev_queue_stopped);
 }
 
-
-/*
- * inode->i_private has the @data argument to debugfs_create_file()
- */
-static
-int i2400m_stats_open(struct inode *inode, struct file *filp)
-{
-	filp->private_data = inode->i_private;
-	return 0;
-}
-
 /*
  * We don't allow partial reads of this file, as then the reader would
  * get weirdly confused data as it is updated.
@@ -117,7 +106,7 @@ ssize_t i2400m_rx_stats_write(struct file *filp, const char __user *buffer,
 static
 const struct file_operations i2400m_rx_stats_fops = {
 	.owner =	THIS_MODULE,
-	.open =		i2400m_stats_open,
+	.open =		simple_open,
 	.read =		i2400m_rx_stats_read,
 	.write =	i2400m_rx_stats_write,
 	.llseek =	default_llseek,
@@ -170,7 +159,7 @@ ssize_t i2400m_tx_stats_write(struct file *filp, const char __user *buffer,
 static
 const struct file_operations i2400m_tx_stats_fops = {
 	.owner =	THIS_MODULE,
-	.open =		i2400m_stats_open,
+	.open =		simple_open,
 	.read =		i2400m_tx_stats_read,
 	.write =	i2400m_tx_stats_write,
 	.llseek =	default_llseek,