|author||Rolf Eike Beer <firstname.lastname@example.org>||2006-07-14 00:24:23 -0700|
|committer||Linus Torvalds <email@example.com>||2006-07-14 21:53:54 -0700|
[PATCH] add function documentation for register_chrdev()
Documentation for register_chrdev() was missing completely. [firstname.lastname@example.org: kerneldocification] Signed-off-by: Rolf Eike Beer <email@example.com> Signed-off-by: Andrew Morton <firstname.lastname@example.org> Signed-off-by: Linus Torvalds <email@example.com>
1 files changed, 22 insertions, 0 deletions
diff --git a/fs/char_dev.c b/fs/char_dev.c
index a4cbc67..3483d3c 100644
@@ -182,6 +182,28 @@ int alloc_chrdev_region(dev_t *dev, unsigned baseminor, unsigned count,
+ * 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)