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/power.c | |
| parent | powerpc: use non-racy method for proc entries creation (diff) | |
| download | linux-dev-cf7acfab032ff262f42954328cdfd20a5d9aaaac.tar.xz linux-dev-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/power.c')
| -rw-r--r-- | drivers/acpi/power.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index 76bf6d90c700..21fc8bf0d31f 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -93,6 +93,7 @@ struct acpi_power_resource { static struct list_head acpi_power_resource_list; static const struct file_operations acpi_power_fops = { + .owner = THIS_MODULE, .open = acpi_power_open_fs, .read = seq_read, .llseek = seq_lseek, @@ -543,15 +544,11 @@ static int acpi_power_add_fs(struct acpi_device *device) } /* 'status' [R] */ - entry = create_proc_entry(ACPI_POWER_FILE_STATUS, - S_IRUGO, acpi_device_dir(device)); + entry = proc_create_data(ACPI_POWER_FILE_STATUS, + S_IRUGO, acpi_device_dir(device), + &acpi_power_fops, acpi_driver_data(device)); if (!entry) return -EIO; - else { - entry->proc_fops = &acpi_power_fops; - entry->data = acpi_driver_data(device); - } - return 0; } |