Commit bb6c8d8f authored by Philip Langdale's avatar Philip Langdale Committed by Jiri Kosina
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HID: hiddev: Add 32bit ioctl compatibilty

The hiddev driver currently lacks 32bit ioctl compatibility, so
if you're running with a 64bit kernel and 32bit userspace, it won't

I'm pretty sure that the only thing missing is a compat_ioctl
implementation as all structs have fixed size fields.

With this change I can use revoco to configure my MX Revolution mouse.
Signed-off-by: default avatarPhilip Langdale <>
Signed-off-by: default avatarJiri Kosina <>
parent 44694359
......@@ -34,6 +34,7 @@
#include <linux/usb.h>
#include <linux/hid.h>
#include <linux/hiddev.h>
#include <linux/compat.h>
#include "usbhid.h"
......@@ -738,6 +739,14 @@ inval:
return -EINVAL;
static long hiddev_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
struct inode *inode = file->f_path.dentry->d_inode;
return hiddev_ioctl(inode, file, cmd, compat_ptr(arg));
static const struct file_operations hiddev_fops = {
.owner = THIS_MODULE,
.read = hiddev_read,
......@@ -747,6 +756,9 @@ static const struct file_operations hiddev_fops = {
.release = hiddev_release,
.ioctl = hiddev_ioctl,
.fasync = hiddev_fasync,
.compat_ioctl = hiddev_compat_ioctl,
static struct usb_class_driver hiddev_class = {
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