From 4a634a56bb6e5ae50b9c9008c2409ef0dfb967f6 Mon Sep 17 00:00:00 2001
From: Faith Ekstrand <faith.ekstrand@collabora.com>
Date: Fri, 15 Aug 2025 11:11:34 -0400
Subject: [PATCH] vulkan/sync: Return early in vk_sync_timeline_wait() if
 wait_value == 0

This is a trivial case so we don't even need to take the lock.

Reviewed-by: Lars-Ivar Hesselberg Simonsen <lars-ivar.simonsen@arm.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36827>
---
 src/vulkan/runtime/vk_sync_timeline.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/vulkan/runtime/vk_sync_timeline.c b/src/vulkan/runtime/vk_sync_timeline.c
index 0d392f28418..4df11d81bda 100644
--- a/src/vulkan/runtime/vk_sync_timeline.c
+++ b/src/vulkan/runtime/vk_sync_timeline.c
@@ -563,6 +563,8 @@ vk_sync_timeline_wait(struct vk_device *device,
                       uint64_t abs_timeout_ns)
 {
    struct vk_sync_timeline_state *state = to_vk_sync_timeline_state(sync);
+   if (wait_value == 0)
+      return VK_SUCCESS;
 
    mtx_lock(&state->mutex);
    VkResult result = vk_sync_timeline_wait_locked(device, state,