drm/amd/amdgpu: Update update_config() logic

[Why]
For MST case: when update_config is called to disable a stream,
this clears the settings for all the streams on that link.
We should only clear the settings for the stream that was disabled.

[How]
Clear the settings after the call to remove display is called.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Leo (Hanghong) Ma <hanghong.ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
index 78e1c11..dcf84a6 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
@@ -398,15 +398,15 @@ static void update_config(void *handle, struct cp_psp_stream_config *config)
        struct mod_hdcp_display *display = &hdcp_work[link_index].display;
        struct mod_hdcp_link *link = &hdcp_work[link_index].link;
 
-       memset(display, 0, sizeof(*display));
-       memset(link, 0, sizeof(*link));
-
-       display->index = aconnector->base.index;
-
        if (config->dpms_off) {
                hdcp_remove_display(hdcp_work, link_index, aconnector);
                return;
        }
+
+       memset(display, 0, sizeof(*display));
+       memset(link, 0, sizeof(*link));
+
+       display->index = aconnector->base.index;
        display->state = MOD_HDCP_DISPLAY_ACTIVE;
 
        if (aconnector->dc_sink != NULL)