--- /tmp/orig/dev/drm/i915/intel_pm.c	2026-07-23 11:54:56.774867000 +0000
+++ dev/drm/i915/intel_pm.c	2026-07-23 11:57:17.686283000 +0000
@@ -4478,7 +4478,7 @@
 skl_wm_method1(const struct drm_i915_private *dev_priv, uint32_t pixel_rate,
 	       uint8_t cpp, uint32_t latency, uint32_t dbuf_block_size)
 {
-	uint32_t wm_intermediate_val;
+	uint64_t wm_intermediate_val;
 	uint_fixed_16_16_t ret;
 
 	if (latency == 0)