From 227df2a2badf0047a3e6e2c1d196aa1b26427b10 Mon Sep 17 00:00:00 2001
From: Hyunjun Ko <zzoon@igalia.com>
Date: Thu, 23 Apr 2020 02:28:34 +0000
Subject: [PATCH] turnip: Fix crashes when geometry shader constants aren't
 used

Fixes dEQP-VK.transform_feedback.fuzz.2_level_array.float.geometry, for
example.

Signed-off-by: Hyunjun Ko <zzoon@igalia.com>
Reviewed-by: Jonathan Marek <jonathan@marek.ca>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4693>
---
 src/freedreno/vulkan/tu_pipeline.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/freedreno/vulkan/tu_pipeline.c b/src/freedreno/vulkan/tu_pipeline.c
index b2d5b69393c..e3ac144603a 100644
--- a/src/freedreno/vulkan/tu_pipeline.c
+++ b/src/freedreno/vulkan/tu_pipeline.c
@@ -897,6 +897,8 @@ tu6_emit_link_map(struct tu_cs *cs,
    int size = DIV_ROUND_UP(num_loc, 4);
 
    size = (MIN2(size + base, consumer->constlen) - base) * 4;
+   if (size <= 0)
+      return;
 
    tu6_emit_const(cs, CP_LOAD_STATE6_GEOM, base, SB6_GS_SHADER, 0, size,
                   patch_locs);
-- 
2.30.2