1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 603428213d2..d9fd8621136 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -30,6 +30,7 @@
 #include <linux/errno.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
+#include <linux/compat.h>
 
 #include <linux/spi/spi.h>
 #include <linux/spi/spidev.h>
@@ -471,6 +472,16 @@ spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
         return retval;
 }
 
+#ifdef CONFIG_COMPAT
+static long
+spidev_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+        return spidev_ioctl(filp, cmd, (unsigned long)compat_ptr(arg));
+}
+#else
+#define spidev_compat_ioctl NULL
+#endif /* CONFIG_COMPAT */
+
 static int spidev_open(struct inode *inode, struct file *filp)
 {
         struct spidev_data      *spidev;
@@ -543,6 +554,7 @@ static const struct file_operations spidev_fops = {
         .write =        spidev_write,
         .read =         spidev_read,
         .unlocked_ioctl = spidev_ioctl,
+        .compat_ioctl = spidev_compat_ioctl,
         .open =         spidev_open,
         .release =      spidev_release,
         .llseek =       no_llseek,