Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / drivers / s390 / char / tape_char.c

diff --git a/drivers/s390/char/tape_char.c b/drivers/s390/char/tape_char.c
index 86262a1..5ce7ca3 100644 (file)
--- 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.
  */