// Register as block device register_blkdev(BD_MAJOR, "s3c2443x_testbd");
// Request IRQ for test completion request_irq(IRQ_BD_TEST, testbd_isr, 0, "s3c2443x_testbd", NULL); Sec S3c2443x Test B D Driver
// Run Power-On Self-Test (POST) if (run_hardware_diagnostics() < 0) return -ENODEV; // Register as block device register_blkdev(BD_MAJOR