From 88fee1c9007a38c19f2c558dc0ab1ddb4c323dc5 Mon Sep 17 00:00:00 2001 From: Bhawanpreet Lakha Date: Fri, 14 Aug 2020 13:01:40 -0400 Subject: drm/dp_mst: Don't return error code when crtc is null [Why] In certain cases the crtc can be NULL and returning -EINVAL causes atomic check to fail when it shouln't. This leads to valid configurations failing because atomic check fails. [How] Don't early return if crtc is null Signed-off-by: Bhawanpreet Lakha Reviewed-by: Lyude Paul [added stable cc] Signed-off-by: Lyude Paul Fixes: 8ec046716ca8 ("drm/dp_mst: Add helper to trigger modeset on affected DSC MST CRTCs") Cc: # v5.6+ Link: https://patchwork.freedesktop.org/patch/msgid/20200814170140.24917-1-Bhawanpreet.Lakha@amd.com --- drivers/gpu/drm/drm_dp_mst_topology.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 1e26b89628f9..0a2f0b5c7a44 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -4990,8 +4990,8 @@ int drm_dp_mst_add_affected_dsc_crtcs(struct drm_atomic_state *state, struct drm crtc = conn_state->crtc; - if (WARN_ON(!crtc)) - return -EINVAL; + if (!crtc) + continue; if (!drm_dp_mst_dsc_aux_for_port(pos->port)) continue; -- cgit v1.2.3