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| author | Matt Mackall <mpm@selenic.com> | 2008-04-29 01:02:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 08:06:24 -0700 |
| commit | 43ae4860ff4a358c29b9d364e45c2d09ad9fa067 (patch) | |
| tree | 7095758a450557dbf6495b405d49aa1b8535fe26 /drivers | |
| parent | 88c730da8c8b20fa732221725347bd9460842bac (diff) | |
| download | kernel_samsung_aries-43ae4860ff4a358c29b9d364e45c2d09ad9fa067.zip kernel_samsung_aries-43ae4860ff4a358c29b9d364e45c2d09ad9fa067.tar.gz kernel_samsung_aries-43ae4860ff4a358c29b9d364e45c2d09ad9fa067.tar.bz2 | |
random: use unlocked_ioctl
No locking actually needed.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/char/random.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c index 4694408..964d78d 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -1062,8 +1062,7 @@ static ssize_t random_write(struct file *file, const char __user *buffer, return (ssize_t)count; } -static int random_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) +static long random_ioctl(struct file *f, unsigned int cmd, unsigned long arg) { int size, ent_count; int __user *p = (int __user *)arg; @@ -1071,8 +1070,8 @@ static int random_ioctl(struct inode *inode, struct file *file, switch (cmd) { case RNDGETENTCNT: - ent_count = input_pool.entropy_count; - if (put_user(ent_count, p)) + /* inherently racy, no point locking */ + if (put_user(input_pool.entropy_count, p)) return -EFAULT; return 0; case RNDADDTOENTCNT: @@ -1115,13 +1114,13 @@ const struct file_operations random_fops = { .read = random_read, .write = random_write, .poll = random_poll, - .ioctl = random_ioctl, + .unlocked_ioctl = random_ioctl, }; const struct file_operations urandom_fops = { .read = urandom_read, .write = random_write, - .ioctl = random_ioctl, + .unlocked_ioctl = random_ioctl, }; /*************************************************************** |