drm/radeon/kms: add 32/64 ioctl support.

Although the new radeon driver ioctls don't need this, some of
the drm initialisation ioctls require it, so add this to make them
work.
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/radeon_drv.c

@@ -286,7 +286,7 @@ static struct drm_driver kms_driver = {
 		 .poll = drm_poll,
 		 .fasync = drm_fasync,
 #ifdef CONFIG_COMPAT
-		 .compat_ioctl = NULL,
+		 .compat_ioctl = radeon_kms_compat_ioctl,
 #endif
 	},
 

drivers/gpu/drm/radeon/radeon_drv.h

@@ -471,6 +471,8 @@ extern int radeon_driver_open(struct drm_device *dev,
 			      struct drm_file *file_priv);
 extern long radeon_compat_ioctl(struct file *filp, unsigned int cmd,
 				unsigned long arg);
+extern long radeon_kms_compat_ioctl(struct file *filp, unsigned int cmd,
+				    unsigned long arg);
 
 extern int radeon_master_create(struct drm_device *dev, struct drm_master *master);
 extern void radeon_master_destroy(struct drm_device *dev, struct drm_master *master);

drivers/gpu/drm/radeon/radeon_ioc32.c

@@ -422,3 +422,18 @@ long radeon_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 
 	return ret;
 }
+
+long radeon_kms_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+	unsigned int nr = DRM_IOCTL_NR(cmd);
+	int ret;
+
+	if (nr < DRM_COMMAND_BASE)
+		return drm_compat_ioctl(filp, cmd, arg);
+
+	lock_kernel();		/* XXX for now */
+	ret = drm_ioctl(filp->f_path.dentry->d_inode, filp, cmd, arg);
+	unlock_kernel();
+
+	return ret;
+}