--- a/drivers/net/wireless/ath/ath10k/debug.c
+++ b/drivers/net/wireless/ath/ath10k/debug.c
@@ -1260,6 +1260,9 @@ static int ath10k_debug_cal_data_fetch(s
 	if (ar->hw_params.cal_data_len == 0)
 		return -EOPNOTSUPP;
 
+	if (ar->hif.bus == ATH10K_BUS_SDIO)
+		return -EINVAL;
+
 	hi_addr = host_interest_item_address(HI_ITEM(hi_board_data));
 
 	ret = ath10k_hif_diag_read(ar, hi_addr, &addr, sizeof(addr));