[Components][SDIO][MMC] fix null point check
@@ -198,6 +198,12 @@ static int mmc_get_ext_csd(struct rt_mmcsd_card *card, rt_uint8_t **new_ext_csd)
*/
static int mmc_parse_ext_csd(struct rt_mmcsd_card *card, rt_uint8_t *ext_csd)
{
+ if(RT_NULL == card || RT_NULL == ext_csd)
+ {
+ LOG_E("emmc parse ext csd fail, invaild args");
+ return -1;
+ }
+
card->flags |= CARD_FLAG_HIGHSPEED;
card->hs_max_data_rate = 200000000;
