From e573f21edd39c3e3ab8c10579851bc2bd100f0bb Mon Sep 17 00:00:00 2001
From: Matt Turner <mattst88@gmail.com>
Date: Tue, 16 Jun 2020 17:07:15 -0700
Subject: [PATCH] intel/tools: Disallow control subregisters > 3

> 4 was probably a typo, since the documentation says that there are 4
subregisters (0-3).

Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5514>
---
 src/intel/tools/i965_gram.y | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/intel/tools/i965_gram.y b/src/intel/tools/i965_gram.y
index e236113771c..2aaf1471c5f 100644
--- a/src/intel/tools/i965_gram.y
+++ b/src/intel/tools/i965_gram.y
@@ -1853,7 +1853,7 @@ statereg:
 controlreg:
 	CONTROLREG subregnum
 	{
-		if ($2 > 4)
+		if ($2 > 3)
 			error(&@2, "control sub register number %d"
 				   " out of range\n", $2);
 
-- 
2.30.2