diff --git a/drivers/gpu/drm/i915/intel_guc_fwif.h b/drivers/gpu/drm/i915/intel_guc_fwif.h
index cb36cbf3818f3386aa0ca6b490a23e4b630dc5f0..6156845641a3c9a228effd351c0fe2b37c8ff081 100644
--- a/drivers/gpu/drm/i915/intel_guc_fwif.h
+++ b/drivers/gpu/drm/i915/intel_guc_fwif.h
@@ -23,8 +23,8 @@
 #ifndef _INTEL_GUC_FWIF_H
 #define _INTEL_GUC_FWIF_H
 
-#define GFXCORE_FAMILY_GEN9		12
-#define GFXCORE_FAMILY_UNKNOWN		0x7fffffff
+#define GUC_CORE_FAMILY_GEN9		12
+#define GUC_CORE_FAMILY_UNKNOWN		0x7fffffff
 
 #define GUC_CLIENT_PRIORITY_KMD_HIGH	0
 #define GUC_CLIENT_PRIORITY_HIGH	1
diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
index 8a1a023e48b28c838a2b4910f3d9b656ce4d3081..2793c01767b831d76fcd56aefd4ebea916295680 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -86,11 +86,11 @@ static u32 get_core_family(struct drm_i915_private *dev_priv)
 
 	switch (gen) {
 	case 9:
-		return GFXCORE_FAMILY_GEN9;
+		return GUC_CORE_FAMILY_GEN9;
 
 	default:
-		WARN(1, "GEN%d does not support GuC operation!\n", gen);
-		return GFXCORE_FAMILY_UNKNOWN;
+		MISSING_CASE(gen);
+		return GUC_CORE_FAMILY_UNKNOWN;
 	}
 }