drm/amd/display: CTS 4.2.2.7

[Why]
Failure to read Detailed Capabilities Info.

[How]
Read Detailed Capbilities Info 80h-08Fh.

Signed-off-by: abdoulaye berthe <abdoulaye.berthe@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 4d1f8ac..849a3a3 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -2196,7 +2196,7 @@ static void get_active_converter_info(
        }
 
        if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_11) {
-               uint8_t det_caps[4];
+               uint8_t det_caps[16]; /* CTS 4.2.2.7 expects source to read Detailed Capabilities Info : 00080h-0008F.*/
                union dwnstream_port_caps_byte0 *port_caps =
                        (union dwnstream_port_caps_byte0 *)det_caps;
                core_link_read_dpcd(link, DP_DOWNSTREAM_PORT_0,