-From cbe5c2a67fb145b210652be20a84690e09e4eb25 Mon Sep 17 00:00:00 2001
-From: Dave Stevenson <dave.stevenson@raspberrypi.org>
-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 <dave.stevenson@raspberrypi.org>
----
- 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
-@@ -969,6 +969,9 @@ 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);