drm/radeon/kms: fix washed out image on legacy tv dac

bad cast was overwriting the tvdac adj values
Fixes fdo bug 27478

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 60d59816b94f..3fba50540f72 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -315,7 +315,7 @@ int radeon_connector_set_property(struct drm_connector *connector, struct drm_pr
                 radeon_encoder = to_radeon_encoder(encoder);
                 if (!radeon_encoder->enc_priv)
                         return 0;
-                if (rdev->is_atom_bios) {
+                if (ASIC_IS_AVIVO(rdev) || radeon_r4xx_atom) {
                         struct radeon_encoder_atom_dac *dac_int;
                         dac_int = radeon_encoder->enc_priv;
                         dac_int->tv_std = val;