From 79ae8510b5b81b9500370f89c619b50ca9c0990f Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Tue, 9 Dec 2025 15:33:18 +0100 Subject: [PATCH] drm/atomic: Increase timeout in drm_atomic_helper_wait_for_vblanks() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Increase the timeout for vblank events from 100 ms to 1000 ms. This is the same fix as in commit f050da08a4ed ("drm/vblank: Increase timeout in drm_wait_one_vblank()") for another vblank timeout. After merging generic DRM vblank timers [1] and converting several DRM drivers for virtual hardware, these drivers synchronize their vblank events to the display refresh rate. This can trigger timeouts within the DRM framework. Signed-off-by: Thomas Zimmermann Link: https://lore.kernel.org/dri-devel/20250904145806.430568-1-tzimmermann@suse.de/ # [1] Reported-by: syzbot+fcede535e7eb57cf5b43@syzkaller.appspotmail.com Closes: https://lore.kernel.org/dri-devel/69381d6c.050a0220.4004e.0017.GAE@google.com/ Reviewed-by: Ville Syrjälä Fixes: 74afeb812850 ("drm/vblank: Add vblank timer") Link: https://patch.msgid.link/20251209143325.102056-1-tzimmermann@suse.de --- drivers/gpu/drm/drm_atomic_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index af02c409c2f60..75e87c0b51f7e 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -1916,7 +1916,7 @@ drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, ret = wait_event_timeout(*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); -- 2.47.3