diff options
Diffstat (limited to 'drivers/pnp/isapnp/proc.c')
| -rw-r--r-- | drivers/pnp/isapnp/proc.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/pnp/isapnp/proc.c b/drivers/pnp/isapnp/proc.c index 3f94edab25f..e73ebefdf3e 100644 --- a/drivers/pnp/isapnp/proc.c +++ b/drivers/pnp/isapnp/proc.c @@ -31,8 +31,9 @@ static struct proc_dir_entry *isapnp_proc_bus_dir = NULL; static loff_t isapnp_proc_bus_lseek(struct file *file, loff_t off, int whence) { loff_t new = -1; + struct inode *inode = file->f_path.dentry->d_inode; - lock_kernel(); + mutex_lock(&inode->i_mutex); switch (whence) { case 0: new = off; @@ -44,12 +45,12 @@ static loff_t isapnp_proc_bus_lseek(struct file *file, loff_t off, int whence) new = 256 + off; break; } - if (new < 0 || new > 256) { - unlock_kernel(); - return -EINVAL; - } - unlock_kernel(); - return (file->f_pos = new); + if (new < 0 || new > 256) + new = -EINVAL; + else + file->f_pos = new; + mutex_unlock(&inode->i_mutex); + return new; } static ssize_t isapnp_proc_bus_read(struct file *file, char __user * buf, |