From 815f72be4d8a1e8629e5892e60beb8e2487db399 Mon Sep 17 00:00:00 2001 From: "David (Dingchen) Zhang" Date: Wed, 4 Dec 2019 10:17:03 -0500 Subject: [PATCH] drm/amd/display: use MST downstream AUX to dump DPRX CRCs [why] In MST setup, we'd use MST downstream AUX to dump the DPRX CRCs from sink device. [how] Assign the mst_port->aux to read DPCD registers. Signed-off-by: David (Dingchen) Zhang Reviewed-by: Harry Wentland Acked-by: Qingqing Zhuo Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c index c6d6baa..5cd788b 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c @@ -307,7 +307,7 @@ int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name) goto cleanup; } - aux = &aconn->dm_dp_aux.aux; + aux = (aconn->port) ? &aconn->port->aux : &aconn->dm_dp_aux.aux; if (!aux) { DRM_DEBUG_DRIVER("No dp aux for amd connector\n"); -- 2.7.4