Provided by:
kernel-doc-2.4.27_2.4.27-12_all 
NAME
devfs_register_blkdev - Optionally register a conventional block
driver.
SYNOPSIS
int devfs_register_blkdev (unsigned int major, const char *name, struct
block_device_operations *bdops);
ARGUMENTS
major The major number for the driver.
name The name of the driver (as seen in /proc/devices).
bdops The block_device_operations structure pointer.
DESCRIPTION
This function will register a block driver provided the "devfs=only"
option was not provided at boot time. Returns 0 on success, else a
negative error code on failure.