block: add documentation for register_blkdev()

}

#endif /* CONFIG_PROC_FS */

/**

 * register_blkdev - register a new block device

 *

 * @major: the requested major device number [1..255]. If @major=0, try to

 *         allocate any unused major number.

 * @name: the name of the new block device as a zero terminated string

 *

 * The @name must be unique within the system.

 *

 * The return value depends on the @major input parameter.

 *  - if a major device number was requested in range [1..255] then the

 *    function returns zero on success, or a negative error code

 *  - if any unused major number was requested with @major=0 parameter

 *    then the return value is the allocated major number in range

 *    [1..255] or a negative error code otherwise

 */

int register_blkdev(unsigned int major, const char *name)

{

	struct blk_major_name **n, *p;