drm: GEM handles are u32, not int

Several functions in the GEM kernel API used int as handle type, but
user API has it __u32 which is also the intended type.

Replace int with u32.

Signed-off-by: Pekka Paalanen <pq@iki.fi>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index ffe8f43..230c9ff 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -164,7 +164,7 @@
  * Removes the mapping from handle to filp for this object.
  */
 static int
-drm_gem_handle_delete(struct drm_file *filp, int handle)
+drm_gem_handle_delete(struct drm_file *filp, u32 handle)
 {
 	struct drm_device *dev;
 	struct drm_gem_object *obj;
@@ -207,7 +207,7 @@
 int
 drm_gem_handle_create(struct drm_file *file_priv,
 		       struct drm_gem_object *obj,
-		       int *handlep)
+		       u32 *handlep)
 {
 	int	ret;
 
@@ -221,7 +221,7 @@
 
 	/* do the allocation under our spinlock */
 	spin_lock(&file_priv->table_lock);
-	ret = idr_get_new_above(&file_priv->object_idr, obj, 1, handlep);
+	ret = idr_get_new_above(&file_priv->object_idr, obj, 1, (int *)handlep);
 	spin_unlock(&file_priv->table_lock);
 	if (ret == -EAGAIN)
 		goto again;
@@ -237,7 +237,7 @@
 /** Returns a reference to the object named by the handle. */
 struct drm_gem_object *
 drm_gem_object_lookup(struct drm_device *dev, struct drm_file *filp,
-		      int handle)
+		      u32 handle)
 {
 	struct drm_gem_object *obj;
 
@@ -344,7 +344,7 @@
 	struct drm_gem_open *args = data;
 	struct drm_gem_object *obj;
 	int ret;
-	int handle;
+	u32 handle;
 
 	if (!(dev->driver->driver_features & DRIVER_GEM))
 		return -ENODEV;
@@ -539,7 +539,6 @@
 	vma->vm_flags |= VM_RESERVED | VM_IO | VM_PFNMAP | VM_DONTEXPAND;
 	vma->vm_ops = obj->dev->driver->gem_vm_ops;
 	vma->vm_private_data = map->handle;
-	/* FIXME: use pgprot_writecombine when available */
 	vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 
 	/* Take a ref for this mapping of the object, so that the fault