diff --git a/drivers/gpu/drm/radeon/reg_srcs/r600 b/drivers/gpu/drm/radeon/reg_srcs/r600
index af0da4ae3f55acb5223f2791940ec90c1db20bce..92f1900dc7caf10f14dba34edec2e34b721ff09d 100644
--- a/drivers/gpu/drm/radeon/reg_srcs/r600
+++ b/drivers/gpu/drm/radeon/reg_srcs/r600
@@ -708,6 +708,7 @@ r600 0x9400
 0x00028D0C DB_RENDER_CONTROL
 0x00028D10 DB_RENDER_OVERRIDE
 0x0002880C DB_SHADER_CONTROL
+0x00028D28 DB_SRESULTS_COMPARE_STATE0
 0x00028D2C DB_SRESULTS_COMPARE_STATE1
 0x00028430 DB_STENCILREFMASK
 0x00028434 DB_STENCILREFMASK_BF