From 996f3d4dc337b07c9561107daa02339da191762b Mon Sep 17 00:00:00 2001
From: Matt Borgerson <contact@mborgerson.com>
Date: Wed, 30 Dec 2020 03:28:51 -0700
Subject: [PATCH] nv2a: Grab lock before marking pending download

---
 hw/xbox/nv2a/pgraph.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/hw/xbox/nv2a/pgraph.c b/hw/xbox/nv2a/pgraph.c
index aded949fb1..356b27ae78 100644
--- a/hw/xbox/nv2a/pgraph.c
+++ b/hw/xbox/nv2a/pgraph.c
@@ -3847,10 +3847,9 @@ static void pgraph_wait_for_surface_download(SurfaceBinding *e)
     NV2AState *d = g_nv2a;
 
     if (atomic_read(&e->draw_dirty)) {
+        qemu_mutex_lock(&d->pfifo.lock);
         atomic_set(&e->download_pending, true);
         atomic_set(&d->pgraph.downloads_pending, true);
-
-        qemu_mutex_lock(&d->pfifo.lock);
         do {
             qemu_cond_broadcast(&d->pfifo.fifo_cond);
             qemu_cond_wait(&d->pfifo.fifo_idle_cond, &d->pfifo.lock);