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-rw-r--r--drivers/spi/spidev.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 603428213d21..d9fd86211365 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,