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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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