chardev: update comment based on the code
The function comment of __register_chrdev_region()
is out of date, so update it based on the code.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/fs/char_dev.c b/fs/char_dev.c
index bd2bf1f..d18cad2 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -88,13 +88,10 @@ static int find_dynamic_major(void)
/*
* Register a single major with a specified minor range.
*
- * If major == 0 this functions will dynamically allocate a major and return
- * its number.
+ * If major == 0 this function will dynamically allocate an unused major.
+ * If major > 0 this function will attempt to reserve the range of minors
+ * with given major.
*
- * If major > 0 this function will attempt to reserve the passed range of
- * minors and will return zero on success.
- *
- * Returns a -ve errno on failure.
*/
static struct char_device_struct *
__register_chrdev_region(unsigned int major, unsigned int baseminor,
