debugfs: Export bool read/write functions

The file read/write functions for bools have no special dependencies
on debugfs internals and are sufficiently non-trivial to be worth
exporting so clients can re-use the implementation.

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 420311bcee38..9beb636b97eb 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -116,6 +116,12 @@ struct dentry *debugfs_create_devm_seqfile(struct device *dev, const char *name,
 
 bool debugfs_initialized(void);
 
+ssize_t debugfs_read_file_bool(struct file *file, char __user *user_buf,
+                               size_t count, loff_t *ppos);
+
+ssize_t debugfs_write_file_bool(struct file *file, const char __user *user_buf,
+                                size_t count, loff_t *ppos);
+
 #else
 
 #include <linux/err.h>
@@ -282,6 +288,20 @@ static inline struct dentry *debugfs_create_devm_seqfile(struct device *dev,
         return ERR_PTR(-ENODEV);
 }
 
+static inline ssize_t debugfs_read_file_bool(struct file *file,
+                                             char __user *user_buf,
+                                             size_t count, loff_t *ppos)
+{
+        return -ENODEV;
+}
+
+static inline ssize_t debugfs_write_file_bool(struct file *file,
+                                              const char __user *user_buf,
+                                              size_t count, loff_t *ppos)
+{
+        return -ENODEV;
+}
+
 #endif
 
 #endif