From dcafc45dcb6d8bb6d159ed0a903bd0f3de597fac Mon Sep 17 00:00:00 2001 From: Neil Armstrong Date: Mon, 2 Jan 2017 16:09:59 +0100 Subject: [PATCH] drm/meson: Fix plane atomic check when no crtc for the plane When no CRTC is associated with the plane, the meson_plane_atomic_check() call breaks the kernel with an Oops. Fixes: bbbe775ec5b5 ("drm: Add support for Amlogic Meson Graphic Controller") Signed-off-by: Neil Armstrong --- drivers/gpu/drm/meson/meson_plane.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/meson/meson_plane.c b/drivers/gpu/drm/meson/meson_plane.c index 4942ca090b46..7890e30eb584 100644 --- a/drivers/gpu/drm/meson/meson_plane.c +++ b/drivers/gpu/drm/meson/meson_plane.c @@ -51,6 +51,9 @@ static int meson_plane_atomic_check(struct drm_plane *plane, struct drm_crtc_state *crtc_state; struct drm_rect clip = { 0, }; + if (!state->crtc) + return 0; + crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc); if (IS_ERR(crtc_state)) return PTR_ERR(crtc_state); -- 2.45.2