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    Subject[PATCH] add class support for lp devices [03/10]

    Add class support for lp devices.

    Based on a patch from Hanna Linder <hannal@us.ibm.com>

    diff -Nru a/drivers/char/lp.c b/drivers/char/lp.c
    --- a/drivers/char/lp.c Thu Jan 15 12:13:07 2004
    +++ b/drivers/char/lp.c Thu Jan 15 12:13:07 2004
    @@ -145,6 +145,7 @@
    struct lp_struct lp_table[LP_NO];

    static unsigned int lp_count = 0;
    +static struct class_simple *lp_class;

    #ifdef CONFIG_LP_CONSOLE
    static struct parport *console_registered; // initially NULL
    @@ -795,6 +796,8 @@
    if (reset)
    lp_reset(nr);

    + class_simple_device_add(lp_class, MKDEV(LP_MAJOR, nr), NULL,
    + "lp%d", nr);
    devfs_mk_cdev(MKDEV(LP_MAJOR, nr), S_IFCHR | S_IRUGO | S_IWUGO,
    "printers/%d", nr);

    @@ -897,6 +900,7 @@
    }

    devfs_mk_dir("printers");
    + lp_class = class_simple_create(THIS_MODULE, "printer");

    if (parport_register_driver (&lp_driver)) {
    printk (KERN_ERR "lp: unable to register with parport\n");
    @@ -958,8 +962,10 @@
    continue;
    parport_unregister_device(lp_table[offset].dev);
    devfs_remove("printers/%d", offset);
    + class_simple_device_remove(MKDEV(LP_MAJOR, offset));
    }
    devfs_remove("printers");
    + class_simple_destroy(lp_class);
    }

    __setup("lp=", lp_setup);
    -
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