drm/amd/display: AMD OUI (DPCD 0x00300) skipped on some sink

[Why]
Sink OUI supported cap is not set so driver skips programming it.

[How]
Revert the change the skips OUI programming if the cap is not set

Signed-off-by: Aric Cyr <[email protected]>
Reviewed-by: Anthony Koo <[email protected]>
Acked-by: Aurabindo Pillai <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

Author: AMD-aric

drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

@@ -4339,22 +4339,6 @@ void dp_set_fec_enable(struct dc_link *link, bool enable)
 
 void dpcd_set_source_specific_data(struct dc_link *link)
 {
-	uint8_t dspc = 0;
-	enum dc_status ret;
-
-	ret = core_link_read_dpcd(link, DP_DOWN_STREAM_PORT_COUNT, &dspc,
-				  sizeof(dspc));
-
-	if (ret != DC_OK) {
-		DC_LOG_ERROR("Error in DP aux read transaction,"
-			     " not writing source specific data\n");
-		return;
-	}
-
-	/* Return if OUI unsupported */
-	if (!(dspc & DP_OUI_SUPPORT))
-		return;
-
 	if (!link->dc->vendor_signature.is_valid) {
 		struct dpcd_amd_signature amd_signature;
 		amd_signature.AMD_IEEE_TxSignature_byte1 = 0x0;