Registering port

[php]
/* Registering port */
port = check_region(0x378, 1); //0x378 是 parlel port 的記憶體位置
if (port) {
printk("parlelport: cannot reserve 0x378\n");
result = port;
goto fail;
}
request_region(0x378, 1, "parlelport");
[/php]