Messages in this thread Patch in this message | | | Date | Sat, 10 Apr 2004 15:51:15 +0200 | Subject | [PATCH 2.6] Class support for ppdev.c | From | (Marcel Sebek) |
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This patch adds class support to ppdev.c.
The module compiles and loads ok.
diff -urN linux-2.6/drivers/char/ppdev.c linux-2.6-new/drivers/char/ppdev.c --- linux-2.6/drivers/char/ppdev.c 2003-12-31 18:51:23.000000000 +0100 +++ linux-2.6-new/drivers/char/ppdev.c 2004-04-10 14:28:54.000000000 +0200 @@ -59,6 +59,7 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/sched.h> +#include <linux/device.h> #include <linux/devfs_fs_kernel.h> #include <linux/ioctl.h> #include <linux/parport.h> @@ -750,31 +751,54 @@ .release = pp_release, }; +static struct class_simple *ppdev_class; + static int __init ppdev_init (void) { - int i; + int i, err = 0; if (register_chrdev (PP_MAJOR, CHRDEV, &pp_fops)) { printk (KERN_WARNING CHRDEV ": unable to get major %d\n", PP_MAJOR); return -EIO; } + ppdev_class = class_simple_create(THIS_MODULE, CHRDEV); + if (IS_ERR(ppdev_class)) { + err = PTR_ERR(ppdev_class); + goto out_chrdev; + } devfs_mk_dir("parports"); for (i = 0; i < PARPORT_MAX; i++) { - devfs_mk_cdev(MKDEV(PP_MAJOR, i), + class_simple_device_add(ppdev_class, MKDEV(PP_MAJOR, i), + NULL, "parport%d", i); + err = devfs_mk_cdev(MKDEV(PP_MAJOR, i), S_IFCHR | S_IRUGO | S_IWUGO, "parports/%d", i); + if (err) + goto out_class; } printk (KERN_INFO PP_VERSION "\n"); - return 0; + goto out; + +out_class: + for (i = 0; i < PARPORT_MAX; i++) + class_simple_device_remove(MKDEV(PP_MAJOR, i)); + class_simple_destroy(ppdev_class); +out_chrdev: + unregister_chrdev(PP_MAJOR, CHRDEV); +out: + return err; } static void __exit ppdev_cleanup (void) { int i; /* Clean up all parport stuff */ - for (i = 0; i < PARPORT_MAX; i++) + for (i = 0; i < PARPORT_MAX; i++) { + class_simple_device_remove(MKDEV(PP_MAJOR, i)); devfs_remove("parports/%d", i); + } + class_simple_destroy(ppdev_class); devfs_remove("parports"); unregister_chrdev (PP_MAJOR, CHRDEV); }
-- Marcel Sebek jabber: sebek@jabber.cz ICQ: 279852819 linux user number: 307850 GPG ID: 5F88735E GPG FP: 0F01 BAB8 3148 94DB B95D 1FCA 8B63 CA06 5F88 735E
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