Change the EVIOC?ABS ioctls to use structs rather than arrays of ints.

drivers/input/evdev.c

@@ -233,6 +233,7 @@ static int evdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 	struct evdev_list *list = file->private_data;
 	struct evdev *evdev = list->evdev;
 	struct input_dev *dev = evdev->handle.dev;
+	struct input_absinfo abs;
 	int t, u;
 
 	if (!evdev->exist) return -ENODEV;
@@ -378,11 +379,14 @@ static int evdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 
 				int t = _IOC_NR(cmd) & ABS_MAX;
 
-				if (put_user(dev->abs[t],     ((int *) arg) + 0)) return -EFAULT;
-				if (put_user(dev->absmin[t],  ((int *) arg) + 1)) return -EFAULT;
-				if (put_user(dev->absmax[t],  ((int *) arg) + 2)) return -EFAULT;
-				if (put_user(dev->absfuzz[t], ((int *) arg) + 3)) return -EFAULT;
-				if (put_user(dev->absflat[t], ((int *) arg) + 4)) return -EFAULT;
+				abs.value = dev->abs[t];
+				abs.minimum = dev->absmin[t];
+				abs.maximum = dev->absmax[t];
+				abs.fuzz = dev->absfuzz[t];
+				abs.flat = dev->absflat[t];
+
+				if (copy_to_user((void *) arg, &abs, sizeof(struct input_absinfo)))
+					return -EFAULT;
 
 				return 0;
 			}
@@ -391,11 +395,14 @@ static int evdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 
 				int t = _IOC_NR(cmd) & ABS_MAX;
 
-				if (get_user(dev->abs[t],     ((int *) arg) + 0)) return -EFAULT;
-				if (get_user(dev->absmin[t],  ((int *) arg) + 1)) return -EFAULT;
-				if (get_user(dev->absmax[t],  ((int *) arg) + 2)) return -EFAULT;
-				if (get_user(dev->absfuzz[t], ((int *) arg) + 3)) return -EFAULT;
-				if (get_user(dev->absflat[t], ((int *) arg) + 4)) return -EFAULT;
+				if (copy_from_user(&abs, (void *) arg, sizeof(struct input_absinfo)))
+					return -EFAULT;
+
+				dev->abs[t] = abs.value;
+				dev->absmin[t] = abs.minimum;
+				dev->absmax[t] = abs.maximum;
+				dev->absfuzz[t] = abs.fuzz;
+				dev->absflat[t] = abs.flat;
 
 				return 0;
 			}

include/linux/input.h

@@ -63,6 +63,14 @@ struct input_id {
 	__u16 version;
 };
 
+struct input_absinfo {
+	int value;
+	int minimum;
+	int maximum;
+	int fuzz;
+	int flat;
+};
+
 #define EVIOCGVERSION		_IOR('E', 0x01, int)			/* get driver version */
 #define EVIOCGID		_IOR('E', 0x02, struct input_id)	/* get device ID */
 #define EVIOCGREP		_IOR('E', 0x03, int[2])			/* get repeat settings */
@@ -79,8 +87,8 @@ struct input_id {
 #define EVIOCGSND(len)		_IOC(_IOC_READ, 'E', 0x1a, len)		/* get all sounds status */
 
 #define EVIOCGBIT(ev,len)	_IOC(_IOC_READ, 'E', 0x20 + ev, len)	/* get event bits */
-#define EVIOCGABS(abs)		_IOR('E', 0x40 + abs, int[5])		/* get abs value/limits */
-#define EVIOCSABS(abs)		_IOW('E', 0xc0 + abs, int[5])		/* set abs value/limits */
+#define EVIOCGABS(abs)		_IOR('E', 0x40 + abs, struct input_absinfo)		/* get abs value/limits */
+#define EVIOCSABS(abs)		_IOW('E', 0xc0 + abs, struct input_absinfo)		/* set abs value/limits */
 
 #define EVIOCSFF		_IOC(_IOC_WRITE, 'E', 0x80, sizeof(struct ff_effect))	/* send a force effect to a force feedback device */
 #define EVIOCRMFF		_IOW('E', 0x81, int)			/* Erase a force effect */