diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index ac2cf3f1c7b4..0c62a61b5eac 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -637,10 +637,16 @@ static void ath10k_init_sdio(struct ath10k *ar)
 	ath10k_bmi_write32(ar, hi_mbox_isr_yield_limit, 99);
 	ath10k_bmi_read32(ar, hi_acs_flags, &param);
 
-	param |= (HI_ACS_FLAGS_SDIO_SWAP_MAILBOX_SET |
-		  HI_ACS_FLAGS_SDIO_REDUCE_TX_COMPL_SET |
-		  HI_ACS_FLAGS_ALT_DATA_CREDIT_SIZE);
+	/* Data transfer is not initiated, when reduced Tx completion
+	 * is used for SDIO. disable it until fixed
+	 */
+	param &= ~HI_ACS_FLAGS_SDIO_REDUCE_TX_COMPL_SET;
 
+	/* Alternate credit size of 1544 as used by SDIO firmware is
+	 * not big enough for mac80211 / native wifi frames. disable it
+	 */
+	param &= ~HI_ACS_FLAGS_ALT_DATA_CREDIT_SIZE;
+	param |= HI_ACS_FLAGS_SDIO_SWAP_MAILBOX_SET;
 	ath10k_bmi_write32(ar, hi_acs_flags, param);
 }