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| 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/processor_idle.c | |
| parent | 667471386d4068e75a6a55b615701ced61eb6333 (diff) | |
| download | lwn-cf7acfab032ff262f42954328cdfd20a5d9aaaac.tar.gz lwn-cf7acfab032ff262f42954328cdfd20a5d9aaaac.zip | |
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/processor_idle.c')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 0d90ff5fd117..789d4947ed31 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -1282,6 +1282,7 @@ static int acpi_processor_power_open_fs(struct inode *inode, struct file *file) } static const struct file_operations acpi_processor_power_fops = { + .owner = THIS_MODULE, .open = acpi_processor_power_open_fs, .read = seq_read, .llseek = seq_lseek, @@ -1822,16 +1823,12 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr, } /* 'power' [R] */ - entry = create_proc_entry(ACPI_PROCESSOR_FILE_POWER, - S_IRUGO, acpi_device_dir(device)); + entry = proc_create_data(ACPI_PROCESSOR_FILE_POWER, + S_IRUGO, acpi_device_dir(device), + &acpi_processor_power_fops, + acpi_driver_data(device)); if (!entry) return -EIO; - else { - entry->proc_fops = &acpi_processor_power_fops; - entry->data = acpi_driver_data(device); - entry->owner = THIS_MODULE; - } - return 0; } |