Commit 79ae8510 authored by Thomas Zimmermann's avatar Thomas Zimmermann
Browse files

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 f050da08 ("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: default avatarThomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/dri-devel/20250904145806.430568-1-tzimmermann@suse.de/

 # [1]
Reported-by: default avatar <syzbot+fcede535e7eb57cf5b43@syzkaller.appspotmail.com>
Closes: https://lore.kernel.org/dri-devel/69381d6c.050a0220.4004e.0017.GAE@google.com/


Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Fixes: 74afeb81 ("drm/vblank: Add vblank timer")
Link: https://patch.msgid.link/20251209143325.102056-1-tzimmermann@suse.de
parent 857fa8f2

drivers/gpu/drm/drm_atomic_helper.c

+1 −1
Original line number Diff line number Diff line
@@ -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);