drm: Remove unused drm_device from drm_gem_object_lookup()

drm_gem_object_lookup() has never required the drm_device for its file
local translation of the user handle to the GEM object. Let's remove the
unused parameter and save some space.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: dri-devel@lists.freedesktop.org
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
[danvet: Fixup kerneldoc too.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 261a3ef..cdd2f43 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -695,7 +695,7 @@
 	if (ret)
 		return ret;
 
-	obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
+	obj = to_intel_bo(drm_gem_object_lookup(file, args->handle));
 	if (&obj->base == NULL) {
 		ret = -ENOENT;
 		goto unlock;
@@ -1049,7 +1049,7 @@
 	if (ret)
 		goto put_rpm;
 
-	obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
+	obj = to_intel_bo(drm_gem_object_lookup(file, args->handle));
 	if (&obj->base == NULL) {
 		ret = -ENOENT;
 		goto unlock;
@@ -1607,7 +1607,7 @@
 	if (ret)
 		return ret;
 
-	obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
+	obj = to_intel_bo(drm_gem_object_lookup(file, args->handle));
 	if (&obj->base == NULL) {
 		ret = -ENOENT;
 		goto unlock;
@@ -1655,7 +1655,7 @@
 	if (ret)
 		return ret;
 
-	obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
+	obj = to_intel_bo(drm_gem_object_lookup(file, args->handle));
 	if (&obj->base == NULL) {
 		ret = -ENOENT;
 		goto unlock;
@@ -1702,7 +1702,7 @@
 	if (args->flags & I915_MMAP_WC && !cpu_has_pat)
 		return -ENODEV;
 
-	obj = drm_gem_object_lookup(dev, file, args->handle);
+	obj = drm_gem_object_lookup(file, args->handle);
 	if (obj == NULL)
 		return -ENOENT;
 
@@ -2065,7 +2065,7 @@
 	if (ret)
 		return ret;
 
-	obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle));
+	obj = to_intel_bo(drm_gem_object_lookup(file, handle));
 	if (&obj->base == NULL) {
 		ret = -ENOENT;
 		goto unlock;
@@ -3140,7 +3140,7 @@
 	if (ret)
 		return ret;
 
-	obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->bo_handle));
+	obj = to_intel_bo(drm_gem_object_lookup(file, args->bo_handle));
 	if (&obj->base == NULL) {
 		mutex_unlock(&dev->struct_mutex);
 		return -ENOENT;
@@ -3934,7 +3934,7 @@
 	struct drm_i915_gem_caching *args = data;
 	struct drm_i915_gem_object *obj;
 
-	obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
+	obj = to_intel_bo(drm_gem_object_lookup(file, args->handle));
 	if (&obj->base == NULL)
 		return -ENOENT;
 
@@ -3995,7 +3995,7 @@
 	if (ret)
 		goto rpm_put;
 
-	obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
+	obj = to_intel_bo(drm_gem_object_lookup(file, args->handle));
 	if (&obj->base == NULL) {
 		ret = -ENOENT;
 		goto unlock;
@@ -4365,7 +4365,7 @@
 	if (ret)
 		return ret;
 
-	obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
+	obj = to_intel_bo(drm_gem_object_lookup(file, args->handle));
 	if (&obj->base == NULL) {
 		ret = -ENOENT;
 		goto unlock;
@@ -4430,7 +4430,7 @@
 	if (ret)
 		return ret;
 
-	obj = to_intel_bo(drm_gem_object_lookup(dev, file_priv, args->handle));
+	obj = to_intel_bo(drm_gem_object_lookup(file_priv, args->handle));
 	if (&obj->base == NULL) {
 		ret = -ENOENT;
 		goto unlock;