From e287ba95b043fe0500b111e4e5d52f91feae33d5 Mon Sep 17 00:00:00 2001
From: Faith Ekstrand <faith.ekstrand@collabora.com>
Date: Thu, 25 Jul 2024 16:45:38 -0500
Subject: [PATCH] nak/sm50: Fix the encoding of ffma with cbuf in src2

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30381>
---
 src/nouveau/compiler/nak/sm50.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/nouveau/compiler/nak/sm50.rs b/src/nouveau/compiler/nak/sm50.rs
index a9f56941016..228404b37a2 100644
--- a/src/nouveau/compiler/nak/sm50.rs
+++ b/src/nouveau/compiler/nak/sm50.rs
@@ -483,7 +483,7 @@ impl SM50Op for OpFFma {
                 e.set_reg_src_ref(39..47, self.srcs[2].src_ref);
             }
             SrcRef::CBuf(cb) => {
-                e.set_opcode(0x4980);
+                e.set_opcode(0x5180);
                 e.set_src_cb(20..39, cb);
                 e.set_reg_src_ref(39..47, self.srcs[1].src_ref);
             }