From: Thomas Zimmermann Date: Tue, 9 Dec 2025 14:33:18 +0000 (+0100) Subject: drm/atomic: Increase timeout in drm_atomic_helper_wait_for_vblanks() X-Git-Tag: v7.1-rc1~23^2^2~14 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=79ae8510b5b81b9500370f89c619b50ca9c0990f;p=thirdparty%2Fkernel%2Flinux.git drm/atomic: Increase timeout in drm_atomic_helper_wait_for_vblanks() 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 --- 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);