1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/char/ppdev.c b/drivers/char/ppdev.c
index c03d998731ea..9e98d0153148 100644
--- a/drivers/char/ppdev.c
+++ b/drivers/char/ppdev.c
@@ -69,6 +69,7 @@
 #include <linux/ppdev.h>
 #include <linux/mutex.h>
 #include <linux/uaccess.h>
+#include <linux/compat.h>
 
 #define PP_VERSION "ppdev: user-space parallel port driver"
 #define CHRDEV "ppdev"
@@ -670,6 +671,14 @@ static long pp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
         return ret;
 }
 
+#ifdef CONFIG_COMPAT
+static long pp_compat_ioctl(struct file *file, unsigned int cmd,
+                unsigned long arg)
+{
+        return pp_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
+}
+#endif
+
 static int pp_open (struct inode * inode, struct file * file)
 {
         unsigned int minor = iminor(inode);
@@ -779,6 +788,9 @@ static const struct file_operations pp_fops = {
         .write          = pp_write,
         .poll           = pp_poll,
         .unlocked_ioctl = pp_ioctl,
+#ifdef CONFIG_COMPAT
+        .compat_ioctl   = pp_compat_ioctl,
+#endif
         .open           = pp_open,
         .release        = pp_release,
 };