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>

1 files changed, 3 insertions, 9 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index b7b1c04f2fba..2bbaebd99ad4 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -84,17 +84,11 @@ static ssize_t iwl_dbgfs_##name##_write(struct file *file,              \
                                         size_t count, loff_t *ppos);
 
 
-static int iwl_dbgfs_open_file_generic(struct inode *inode, struct file *file)
-{
-        file->private_data = inode->i_private;
-        return 0;
-}
-
 #define DEBUGFS_READ_FILE_OPS(name)                                     \
         DEBUGFS_READ_FUNC(name);                                        \
 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
         .read = iwl_dbgfs_##name##_read,                                \
-        .open = iwl_dbgfs_open_file_generic,                            \
+        .open = simple_open,                                            \
         .llseek = generic_file_llseek,                                  \
 };
 
@@ -102,7 +96,7 @@ static const struct file_operations iwl_dbgfs_##name##_ops = {          \
         DEBUGFS_WRITE_FUNC(name);                                       \
 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
         .write = iwl_dbgfs_##name##_write,                              \
-        .open = iwl_dbgfs_open_file_generic,                            \
+        .open = simple_open,                                            \
         .llseek = generic_file_llseek,                                  \
 };
 
@@ -113,7 +107,7 @@ static const struct file_operations iwl_dbgfs_##name##_ops = {          \
 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
         .write = iwl_dbgfs_##name##_write,                              \
         .read = iwl_dbgfs_##name##_read,                                \
-        .open = iwl_dbgfs_open_file_generic,                            \
+        .open = simple_open,                                            \
         .llseek = generic_file_llseek,                                  \
 };