From b9121624fc6d59ceef5685dfdd54331b68d52005 Mon Sep 17 00:00:00 2001
From: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Date: Tue, 24 Nov 2020 13:56:52 -0500
Subject: [PATCH] pan/bi: Fix off-by-one in RA

Could result in trying to allocate R64 which is clearly wrong.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7615>
---
 src/panfrost/bifrost/bi_ra.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/panfrost/bifrost/bi_ra.c b/src/panfrost/bifrost/bi_ra.c
index 3d82edcf094..e605e1d5e7b 100644
--- a/src/panfrost/bifrost/bi_ra.c
+++ b/src/panfrost/bifrost/bi_ra.c
@@ -76,7 +76,7 @@ bi_allocate_registers(bi_context *ctx, bool *success)
         } else {
                 /* R0 - R63, all 32-bit */
                 l->class_start[BI_REG_CLASS_WORK] = 0;
-                l->class_size[BI_REG_CLASS_WORK] = 64 * 4;
+                l->class_size[BI_REG_CLASS_WORK] = 63 * 4;
         }
 
         bi_foreach_instr_global(ctx, ins) {