Extend the use of extended receiver cap at 0x2200 to cover
MAIN_LINK_CHANNEL_CODING_CAP in 0x2206, in case an implementation hides
the DP 2.0 128b/132b channel encoding cap.

Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Manasi Navare <manasi.d.nav...@intel.com>
Signed-off-by: Jani Nikula <jani.nik...@intel.com>
---
 drivers/gpu/drm/drm_dp_helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index 9b2a2961fca8..9389f92cb944 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -608,7 +608,7 @@ static u8 drm_dp_downstream_port_count(const u8 
dpcd[DP_RECEIVER_CAP_SIZE])
 static int drm_dp_read_extended_dpcd_caps(struct drm_dp_aux *aux,
                                          u8 dpcd[DP_RECEIVER_CAP_SIZE])
 {
-       u8 dpcd_ext[6];
+       u8 dpcd_ext[DP_MAIN_LINK_CHANNEL_CODING + 1];
        int ret;
 
        /*
-- 
2.20.1

Reply via email to