.dai_clk_names[RT5682S_DAI_BCLK_IDX] = "rt5682-dai-bclk",
 };
 
-const char *rt5682s_supply_names[RT5682S_NUM_SUPPLIES] = {
+static const char *rt5682s_supply_names[RT5682S_NUM_SUPPLIES] = {
        "AVDD",
        "MICVDD",
 };
                dev_warn(dev, "Failed to apply regmap patch: %d\n", ret);
 }
 
-const struct reg_default rt5682s_reg[] = {
+static const struct reg_default rt5682s_reg[] = {
        {0x0002, 0x8080},
        {0x0003, 0x0001},
        {0x0005, 0x0000},
 #define rt5682s_resume NULL
 #endif
 
-const struct snd_soc_dai_ops rt5682s_aif1_dai_ops = {
+static const struct snd_soc_dai_ops rt5682s_aif1_dai_ops = {
        .hw_params = rt5682s_hw_params,
        .set_fmt = rt5682s_set_dai_fmt,
        .set_tdm_slot = rt5682s_set_tdm_slot,