[RFC][PATCH 3/6] drm: Allow drm_mode_object_find() to look up an object of any type

[ville.syrjala at linux.intel.com]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

To avoid having to pass object types from userspace for atomic mode
setting ioctl, allow drm_mode_object_find() to look up an object of any
type. This will only work as long as the all object types share the ID
space.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/drm_crtc.c |    3 ++-
 include/drm/drm_crtc.h     |    1 +
 2 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index cc18ae6..9945e4b 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -268,7 +268,8 @@ struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
 
 	mutex_lock(&dev->mode_config.idr_mutex);
 	obj = idr_find(&dev->mode_config.crtc_idr, id);
-	if (!obj || (obj->type != type) || (obj->id != id))
+	if (!obj || (type != DRM_MODE_OBJECT_ANY && obj->type != type) ||
+	    (obj->id != id))
 		obj = NULL;
 	mutex_unlock(&dev->mode_config.idr_mutex);
 
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 70554c3..8b1f173 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -47,6 +47,7 @@ struct drm_object_properties;
 #define DRM_MODE_OBJECT_FB 0xfbfbfbfb
 #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb
 #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee
+#define DRM_MODE_OBJECT_ANY 0
 
 struct drm_mode_object {
 	uint32_t id;
-- 
1.7.3.4