From 1283f4352716a6c4e083d01505c5bb1dee3bb996 Mon Sep 17 00:00:00 2001
From: David Rosca <david.rosca@amd.com>
Date: Mon, 15 Jul 2024 16:46:40 +0200
Subject: [PATCH] frontends/va: Assert maximum number of temporal layers

There is a hardcoded limit of 4 layers in all structs, so make sure
drivers will not return more.

Reviewed-By: Sil Vilerino <sivileri@microsoft.com>
Reviewed-by: Ruijing Dong <ruijing.dong@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30151>
---
 src/gallium/frontends/va/config.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/gallium/frontends/va/config.c b/src/gallium/frontends/va/config.c
index 68655eb0b7d..e1dd3d34ffc 100644
--- a/src/gallium/frontends/va/config.c
+++ b/src/gallium/frontends/va/config.c
@@ -281,6 +281,7 @@ vlVaGetConfigAttributes(VADriverContextP ctx, VAProfile profile, VAEntrypoint en
             value = pscreen->get_video_param(pscreen, ProfileToPipe(profile),
                                              PIPE_VIDEO_ENTRYPOINT_ENCODE,
                                              PIPE_VIDEO_CAP_MAX_TEMPORAL_LAYERS);
+            assert(value <= 4);
             if (value > 0) {
                value -= 1;
                value |= (1 << 8);   /* temporal_layer_bitrate_control_flag */