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authorArnd Bergmann <arnd@arndb.de>2010-04-27 00:24:05 +0200
committerFrederic Weisbecker <fweisbec@gmail.com>2010-05-17 05:27:41 +0200
commit55929332c92e5d34d65a8f784604c92677ea3e15 (patch)
tree555e922d470336d07ace32bb564ac5358379a3c4 /drivers/char/dtlk.c
parent703c631ebbcadcfd861d01e697fdda7c388fec9a (diff)
drivers: Push down BKL into various drivers
These are the last remaining device drivers using the ->ioctl file operation in the drivers directory (except from v4l drivers). [fweisbec: drop i8k pushdown as it has been done from procfs pushdown branch already] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'drivers/char/dtlk.c')
-rw-r--r--drivers/char/dtlk.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/char/dtlk.c b/drivers/char/dtlk.c
index 045c930e632..e3859d4eaea 100644
--- a/drivers/char/dtlk.c
+++ b/drivers/char/dtlk.c
@@ -93,8 +93,8 @@ static ssize_t dtlk_write(struct file *, const char __user *,
static unsigned int dtlk_poll(struct file *, poll_table *);
static int dtlk_open(struct inode *, struct file *);
static int dtlk_release(struct inode *, struct file *);
-static int dtlk_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg);
+static long dtlk_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg);
static const struct file_operations dtlk_fops =
{
@@ -102,7 +102,7 @@ static const struct file_operations dtlk_fops =
.read = dtlk_read,
.write = dtlk_write,
.poll = dtlk_poll,
- .ioctl = dtlk_ioctl,
+ .unlocked_ioctl = dtlk_ioctl,
.open = dtlk_open,
.release = dtlk_release,
};
@@ -263,10 +263,9 @@ static void dtlk_timer_tick(unsigned long data)
wake_up_interruptible(&dtlk_process_list);
}
-static int dtlk_ioctl(struct inode *inode,
- struct file *file,
- unsigned int cmd,
- unsigned long arg)
+static long dtlk_ioctl(struct file *file,
+ unsigned int cmd,
+ unsigned long arg)
{
char __user *argp = (char __user *)arg;
struct dtlk_settings *sp;
@@ -276,7 +275,9 @@ static int dtlk_ioctl(struct inode *inode,
switch (cmd) {
case DTLK_INTERROGATE:
+ lock_kernel();
sp = dtlk_interrogate();
+ unlock_kernel();
if (copy_to_user(argp, sp, sizeof(struct dtlk_settings)))
return -EINVAL;
return 0;