From 08c41221d7102106d0b70a6399e2270919458077 Mon Sep 17 00:00:00 2001
From: Glenn Kennard <glenn.kennard@gmail.com>
Date: Thu, 27 Aug 2015 19:04:15 +0200
Subject: [PATCH] r600g/sb: Handle undef in read port tracker

e8e443 missed adding check for undef values also in
unreserve function, leading to an assert triggering.

Signed-off-by: Glenn Kennard <glenn.kennard@gmail.com>
Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
(cherry picked from commit 36f1999a87258603b6720d55e6020d5d24c215c9)
---
 src/gallium/drivers/r600/sb/sb_sched.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gallium/drivers/r600/sb/sb_sched.cpp b/src/gallium/drivers/r600/sb/sb_sched.cpp
index 62680788c5e..c98b8fff764 100644
--- a/src/gallium/drivers/r600/sb/sb_sched.cpp
+++ b/src/gallium/drivers/r600/sb/sb_sched.cpp
@@ -236,7 +236,7 @@ void rp_gpr_tracker::unreserve(alu_node* n) {
 
 	for (i = 0; i < nsrc; ++i) {
 		value *v = n->src[i];
-		if (v->is_readonly())
+		if (v->is_readonly() || v->is_undef())
 			continue;
 		if (i == 1 && opt)
 			continue;
-- 
2.11.0