From: "David (Dingchen) Zhang" <dingchen.zhang@xxxxxxx>
[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 <dingchen.zhang@xxxxxxx>
Reviewed-by: Harry Wentland <Harry.Wentland@xxxxxxx>
Acked-by: Qingqing Zhuo <qingqing.zhuo@xxxxxxx>
---
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 c6d6baab106e..5cd788b20c21 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");
--
2.17.1
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