From e2e9da35d4a598490b73da41eea1db27540339fd Mon Sep 17 00:00:00 2001 From: Dave Stevenson Date: Wed, 7 Aug 2019 11:31:08 +0100 Subject: [PATCH] drm/vc4: Add missing NULL check to vc4_crtc_consume_event vc4_crtc_consume_event wasn't checking crtc->state->event was set before dereferencing it, leading to an OOPS. Fixes "a5b534b drm/vc4: Resolve the vblank warnings on mode switching" Signed-off-by: Dave Stevenson --- drivers/gpu/drm/vc4/vc4_firmware_kms.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c +++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c @@ -1000,6 +1000,9 @@ static void vc4_crtc_consume_event(struc struct drm_device *dev = crtc->dev; unsigned long flags; + if (!crtc->state->event) + return; + crtc->state->event->pipe = drm_crtc_index(crtc); WARN_ON(drm_crtc_vblank_get(crtc) != 0);