From f5e5d1983b96f848ed89bdd3b0ea9825efa75063 Mon Sep 17 00:00:00 2001 From: Vincent Vanlaer Date: Sun, 4 Feb 2018 21:50:52 +0100 Subject: [PATCH] Do not allow gamma control without a crtc --- backend/drm/drm.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/backend/drm/drm.c b/backend/drm/drm.c index eef1e333..70e6a1cf 100644 --- a/backend/drm/drm.c +++ b/backend/drm/drm.c @@ -232,13 +232,21 @@ static void wlr_drm_connector_set_gamma(struct wlr_output *output, uint32_t size, uint16_t *r, uint16_t *g, uint16_t *b) { struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output; struct wlr_drm_backend *drm = (struct wlr_drm_backend *)output->backend; - drm->iface->crtc_set_gamma(drm, conn->crtc, r, g, b, size); + + if (conn->crtc) { + drm->iface->crtc_set_gamma(drm, conn->crtc, r, g, b, size); + } } static uint32_t wlr_drm_connector_get_gamma_size(struct wlr_output *output) { struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output; struct wlr_drm_backend *drm = (struct wlr_drm_backend *)output->backend; - return drm->iface->crtc_get_gamma_size(drm, conn->crtc); + + if (conn->crtc) { + return drm->iface->crtc_get_gamma_size(drm, conn->crtc); + } + + return 0; } void wlr_drm_connector_start_renderer(struct wlr_drm_connector *conn) {