From 37e0c6717d0c6c7dab8a89ea6ff09350bb42fa3e Mon Sep 17 00:00:00 2001
From: jsg <jsg@openbsd.org>
Date: Tue, 2 Jun 2026 03:36:50 +0000
Subject: [PATCH] drm/atomic: Increase timeout in
 drm_atomic_helper_wait_for_vblanks()

From Thomas Zimmermann
ed39ecd3a96cdf94589aef46f2f711cf93baa0d3 in linux-6.18.y/6.18.34
79ae8510b5b81b9500370f89c619b50ca9c0990f in mainline linux
---
 sys/dev/pci/drm/drm_atomic_helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/dev/pci/drm/drm_atomic_helper.c b/sys/dev/pci/drm/drm_atomic_helper.c
index 6c1be4f285b..131456680c2 100644
--- a/sys/dev/pci/drm/drm_atomic_helper.c
+++ b/sys/dev/pci/drm/drm_atomic_helper.c
@@ -1919,7 +1919,7 @@ drm_atomic_helper_wait_for_vblanks(struct drm_device *dev,
 		ret = wait_event_timeout(dev->vblank[i].queue,
 					 state->crtcs[i].last_vblank_count !=
 						drm_crtc_vblank_count(crtc),
-					 msecs_to_jiffies(100));
+					 msecs_to_jiffies(1000));
 
 		WARN(!ret, "[CRTC:%d:%s] vblank wait timed out\n",
 		     crtc->base.id, crtc->name);