X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=fs%2Fchar_dev.c;h=3483d3cf80873432d7696f6f3f68b4adef928b01;hb=d1284b5f11aa946d732d60a402dfeec86a7bb2ef;hp=f3418f7a6e9d9da9bf894840cd23eba9be77d5b7;hpb=875999c5539999f61a45620aae0c3e5fb1d2b035;p=linux-2.6-omap-h63xx.git

diff --git a/fs/char_dev.c b/fs/char_dev.c
index f3418f7a6e9..3483d3cf808 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -4,7 +4,6 @@
  *  Copyright (C) 1991, 1992  Linus Torvalds
  */
 
-#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/fs.h>
 #include <linux/slab.h>
@@ -14,7 +13,6 @@
 #include <linux/errno.h>
 #include <linux/module.h>
 #include <linux/smp_lock.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/seq_file.h>
 
 #include <linux/kobject.h>
@@ -184,6 +182,28 @@ int alloc_chrdev_region(dev_t *dev, unsigned baseminor, unsigned count,
 	return 0;
 }
 
+/**
+ * register_chrdev() - Register a major number for character devices.
+ * @major: major device number or 0 for dynamic allocation
+ * @name: name of this range of devices
+ * @fops: file operations associated with this devices
+ *
+ * If @major == 0 this functions will dynamically allocate a major and return
+ * its number.
+ *
+ * If @major > 0 this function will attempt to reserve a device with the given
+ * major number and will return zero on success.
+ *
+ * Returns a -ve errno on failure.
+ *
+ * The name of this device has nothing to do with the name of the device in
+ * /dev. It only helps to keep track of the different owners of devices. If
+ * your module name has only one type of devices it's ok to use e.g. the name
+ * of the module here.
+ *
+ * This function registers a range of 256 minor numbers. The first minor number
+ * is 0.
+ */
 int register_chrdev(unsigned int major, const char *name,
 		    const struct file_operations *fops)
 {