static u8 rtw8822c_dpk_dc_corr_check(struct rtw_dev *rtwdev, u8 path)
 {
        u16 dc_i, dc_q;
-       u8 corr_val, corr_idx;
+       u8 corr_idx;
 
        rtw_write32(rtwdev, REG_RXSRAM_CTL, 0x000900f0);
        dc_i = (u16)rtw_read32_mask(rtwdev, REG_STAT_RPT, GENMASK(27, 16));
 
        rtw_write32(rtwdev, REG_RXSRAM_CTL, 0x000000f0);
        corr_idx = (u8)rtw_read32_mask(rtwdev, REG_STAT_RPT, GENMASK(7, 0));
-       corr_val = (u8)rtw_read32_mask(rtwdev, REG_STAT_RPT, GENMASK(15, 8));
+       rtw_read32_mask(rtwdev, REG_STAT_RPT, GENMASK(15, 8));
 
        if (dc_i > 200 || dc_q > 200 || corr_idx < 40 || corr_idx > 65)
                return 1;