drm/radeon: use NULL rather then 0 in audio detect

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/radeon/radeon_audio.c b/drivers/gpu/drm/radeon/radeon_audio.c
index 8b4352d..a3ceef6 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_audio.c
+++ b/drivers/gpu/drm/radeon/radeon_audio.c
@@ -470,7 +470,7 @@ void radeon_audio_detect(struct drm_connector *connector,
                int sink_type;
 
                if (!drm_detect_monitor_audio(radeon_connector_edid(connector))) {
-                       radeon_encoder->audio = 0;
+                       radeon_encoder->audio = NULL;
                        return;
                }