diff options
| author | Jonathan Corbet <corbet@lwn.net> | 2008-05-16 23:54:46 +0400 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2008-06-21 00:05:51 +0400 |
| commit | c0bed680f0ca603864375ed5f9fed4296a53aa62 (patch) | |
| tree | d6421cd2f369309f0f9693083f3d3540e160e196 /drivers/char | |
| parent | b8c71d7ae2a7f723d171d9175212b6d0a727655d (diff) | |
| download | linux-c0bed680f0ca603864375ed5f9fed4296a53aa62.tar.xz | |
raw: BKL pushdown
Put explicit lock_kernel() calls into raw_open(), even though the existing
locking looks adequate.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/raw.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/char/raw.c b/drivers/char/raw.c index bbfa0e241cba..505fcbe884a4 100644 --- a/drivers/char/raw.c +++ b/drivers/char/raw.c @@ -19,6 +19,7 @@ #include <linux/cdev.h> #include <linux/device.h> #include <linux/mutex.h> +#include <linux/smp_lock.h> #include <asm/uaccess.h> @@ -53,6 +54,7 @@ static int raw_open(struct inode *inode, struct file *filp) return 0; } + lock_kernel(); mutex_lock(&raw_mutex); /* @@ -79,6 +81,7 @@ static int raw_open(struct inode *inode, struct file *filp) bdev->bd_inode->i_mapping; filp->private_data = bdev; mutex_unlock(&raw_mutex); + unlock_kernel(); return 0; out2: |