From 371c18b33105182bfd86b900dc2824d1e1d92389 Mon Sep 17 00:00:00 2001
From: Emma Anholt <emma@anholt.net>
Date: Thu, 27 Jul 2023 17:24:12 -0700
Subject: [PATCH] freedreno/a5xx: Skip SSBO emit when none are enabled.

There was a weird NUM_UNIT=0 in a crash dump I was looking at, but this
doesn't fix the crash.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24358>
---
 src/gallium/drivers/freedreno/a5xx/fd5_emit.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gallium/drivers/freedreno/a5xx/fd5_emit.c b/src/gallium/drivers/freedreno/a5xx/fd5_emit.c
index 3234dd67de6..ccfa34e0cbc 100644
--- a/src/gallium/drivers/freedreno/a5xx/fd5_emit.c
+++ b/src/gallium/drivers/freedreno/a5xx/fd5_emit.c
@@ -419,6 +419,9 @@ emit_ssbos(struct fd_context *ctx, struct fd_ringbuffer *ring,
 {
    unsigned count = util_last_bit(so->enabled_mask);
 
+   if (count == 0)
+      return;
+
    OUT_PKT7(ring, CP_LOAD_STATE4, 3 + 2 * count);
    OUT_RING(ring, CP_LOAD_STATE4_0_DST_OFF(0) |
                      CP_LOAD_STATE4_0_STATE_SRC(SS4_DIRECT) |