diff options
Diffstat (limited to 'drivers/s390/char/tape_char.c')
| -rw-r--r-- | drivers/s390/char/tape_char.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/s390/char/tape_char.c b/drivers/s390/char/tape_char.c index 86262a13f7c6..5ce7ca38ace0 100644 --- a/drivers/s390/char/tape_char.c +++ b/drivers/s390/char/tape_char.c @@ -37,6 +37,8 @@ static int tapechar_open(struct inode *,struct file *); static int tapechar_release(struct inode *,struct file *); static int tapechar_ioctl(struct inode *, struct file *, unsigned int, unsigned long); +static long tapechar_compat_ioctl(struct file *, unsigned int, + unsigned long); static struct file_operations tape_fops = { @@ -44,6 +46,7 @@ static struct file_operations tape_fops = .read = tapechar_read, .write = tapechar_write, .ioctl = tapechar_ioctl, + .compat_ioctl = tapechar_compat_ioctl, .open = tapechar_open, .release = tapechar_release, }; @@ -463,6 +466,23 @@ tapechar_ioctl(struct inode *inp, struct file *filp, return device->discipline->ioctl_fn(device, no, data); } +static long +tapechar_compat_ioctl(struct file *filp, unsigned int no, unsigned long data) +{ + struct tape_device *device = filp->private_data; + int rval = -ENOIOCTLCMD; + + if (device->discipline->ioctl_fn) { + lock_kernel(); + rval = device->discipline->ioctl_fn(device, no, data); + unlock_kernel(); + if (rval == -EINVAL) + rval = -ENOIOCTLCMD; + } + + return rval; +} + /* * Initialize character device frontend. */ |