diff options
| author | Denis V. Lunev <den@openvz.org> | 2008-04-29 01:02:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 08:06:22 -0700 |
| commit | cf7acfab032ff262f42954328cdfd20a5d9aaaac (patch) | |
| tree | 231698d72d4508f3b26f606f18ef844387ec43e5 /drivers/acpi/sbs.c | |
| parent | 667471386d4068e75a6a55b615701ced61eb6333 (diff) | |
| download | linux-cf7acfab032ff262f42954328cdfd20a5d9aaaac.tar.bz2 | |
acpi: 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.
Add correct ->owner to proc_fops to fix reading/module unloading race.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/acpi/sbs.c')
| -rw-r--r-- | drivers/acpi/sbs.c | 35 |
1 files changed, 9 insertions, 26 deletions
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c index 585ae3c9c8ea..10a36512647c 100644 --- a/drivers/acpi/sbs.c +++ b/drivers/acpi/sbs.c @@ -483,8 +483,6 @@ acpi_sbs_add_fs(struct proc_dir_entry **dir, struct file_operations *state_fops, struct file_operations *alarm_fops, void *data) { - struct proc_dir_entry *entry = NULL; - if (!*dir) { *dir = proc_mkdir(dir_name, parent_dir); if (!*dir) { @@ -494,34 +492,19 @@ acpi_sbs_add_fs(struct proc_dir_entry **dir, } /* 'info' [R] */ - if (info_fops) { - entry = create_proc_entry(ACPI_SBS_FILE_INFO, S_IRUGO, *dir); - if (entry) { - entry->proc_fops = info_fops; - entry->data = data; - entry->owner = THIS_MODULE; - } - } + if (info_fops) + proc_create_data(ACPI_SBS_FILE_INFO, S_IRUGO, *dir, + info_fops, data); /* 'state' [R] */ - if (state_fops) { - entry = create_proc_entry(ACPI_SBS_FILE_STATE, S_IRUGO, *dir); - if (entry) { - entry->proc_fops = state_fops; - entry->data = data; - entry->owner = THIS_MODULE; - } - } + if (state_fops) + proc_create_data(ACPI_SBS_FILE_STATE, S_IRUGO, *dir, + state_fops, data); /* 'alarm' [R/W] */ - if (alarm_fops) { - entry = create_proc_entry(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir); - if (entry) { - entry->proc_fops = alarm_fops; - entry->data = data; - entry->owner = THIS_MODULE; - } - } + if (alarm_fops) + proc_create_data(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir, + alarm_fops, data); return 0; } |