diff options
| author | Denis V. Lunev <den@openvz.org> | 2008-04-29 01:02:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 08:06:22 -0700 |
| commit | 1b50221738108c438d5f25c7a043fb89e9e27044 (patch) | |
| tree | 510b2baf0675fee9ce450b6756ff36c77e2f626c /drivers/char/misc.c | |
| parent | 0fd689468231cb5eee9cc5d6331081b77c7a7a76 (diff) | |
| download | lwn-1b50221738108c438d5f25c7a043fb89e9e27044.tar.gz lwn-1b50221738108c438d5f25c7a043fb89e9e27044.zip | |
drivers: use non-racy method for proc entries creation
Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data
be setup before gluing PDE to main tree.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/misc.c')
| -rw-r--r-- | drivers/char/misc.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/drivers/char/misc.c b/drivers/char/misc.c index 4d058dadbfcc..eaace0db0ff4 100644 --- a/drivers/char/misc.c +++ b/drivers/char/misc.c @@ -263,23 +263,26 @@ EXPORT_SYMBOL(misc_deregister); static int __init misc_init(void) { -#ifdef CONFIG_PROC_FS - struct proc_dir_entry *ent; + int err; - ent = create_proc_entry("misc", 0, NULL); - if (ent) - ent->proc_fops = &misc_proc_fops; +#ifdef CONFIG_PROC_FS + proc_create("misc", 0, NULL, &misc_proc_fops); #endif misc_class = class_create(THIS_MODULE, "misc"); + err = PTR_ERR(misc_class); if (IS_ERR(misc_class)) - return PTR_ERR(misc_class); + goto fail_remove; - if (register_chrdev(MISC_MAJOR,"misc",&misc_fops)) { - printk("unable to get major %d for misc devices\n", - MISC_MAJOR); - class_destroy(misc_class); - return -EIO; - } + err = -EIO; + if (register_chrdev(MISC_MAJOR,"misc",&misc_fops)) + goto fail_printk; return 0; + +fail_printk: + printk("unable to get major %d for misc devices\n", MISC_MAJOR); + class_destroy(misc_class); +fail_remove: + remove_proc_entry("misc", NULL); + return err; } subsys_initcall(misc_init); |