[PATCH 03/11] drm: Retain reference to blob properties in lookup

[Daniel Stone]

When we look up a blob property, make sure we retain a reference to the
blob for the lifetime.

Signed-off-by: Daniel Stone <daniels at collabora.com>
Tested-by: Sean Paul <seanpaul at chromium.org>
---
 drivers/gpu/drm/drm_crtc.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 7e5085f..da2b117 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -4661,7 +4661,9 @@ bool drm_property_change_valid_get(struct drm_property 
*property,
                for (i = 0; i < property->num_values; i++)
                        valid_mask |= (1ULL << property->values[i]);
                return !(value & ~valid_mask);
-       } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
+       } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB) ||
+                  (drm_property_type_is(property, DRM_MODE_PROP_OBJECT) &&
+                   property->values[0] == DRM_MODE_OBJECT_BLOB)) {
                struct drm_property_blob *blob;

                if (value == 0)
@@ -4709,6 +4711,8 @@ void drm_property_change_valid_put(struct drm_property 
*property,
        if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
                if (property->values[0] == DRM_MODE_OBJECT_FB)
                        drm_framebuffer_unreference(obj_to_fb(ref));
+               else if (property->values[0] == DRM_MODE_OBJECT_BLOB)
+                       drm_property_unreference_blob(obj_to_blob(ref));
        }
 }

-- 
2.4.1