i915 does not set DRIVER_ATOMIC by default yet but uses atomic_check and atomic_commit. drm_object_property_get_value() does not read the correct value of atomic properties if DRIVER_ATOMIC is not set. Checking whether the driver uses atomic modeset is a better check instead as the property values are tracked in the state structures.
v2: Included header
Cc: Daniel Vetter daniel.vetter@ffwll.ch Reviewed-by: Daniel Vetter daniel.vetter@ffwll.ch Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com --- drivers/gpu/drm/drm_mode_object.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_mode_object.c b/drivers/gpu/drm/drm_mode_object.c index 9f17085..14543ff 100644 --- a/drivers/gpu/drm/drm_mode_object.c +++ b/drivers/gpu/drm/drm_mode_object.c @@ -23,6 +23,7 @@ #include <linux/export.h> #include <drm/drmP.h> #include <drm/drm_mode_object.h> +#include <drm/drm_atomic.h>
#include "drm_crtc_internal.h"
@@ -273,7 +274,7 @@ int drm_object_property_get_value(struct drm_mode_object *obj, * their value in obj->properties->values[].. mostly to avoid * having to deal w/ EDID and similar props in atomic paths: */ - if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) && + if (drm_drv_uses_atomic_modeset(property->dev) && !(property->flags & DRM_MODE_PROP_IMMUTABLE)) return drm_atomic_get_property(obj, property, val);