diff --git a/drivers/net/wireless/wl12xx/sdio.c b/drivers/net/wireless/wl12xx/sdio.c
index 5a2951ed6eda8ba42394ef7e4f4ce57caea42dec..2ade222f7cbb7b2aa6d22da78db33d09eb0e88e7 100644
--- a/drivers/net/wireless/wl12xx/sdio.c
+++ b/drivers/net/wireless/wl12xx/sdio.c
@@ -246,6 +246,9 @@ static int __devinit wl1271_probe(struct sdio_func *func,
 	/* Grab access to FN0 for ELP reg. */
 	func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
 
+	/* Use block mode for transferring over one block size of data */
+	func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
+
 	wlan_data = wl12xx_get_platform_data();
 	if (IS_ERR(wlan_data)) {
 		ret = PTR_ERR(wlan_data);
diff --git a/drivers/net/wireless/wl12xx/sdio_test.c b/drivers/net/wireless/wl12xx/sdio_test.c
index 968249a4da3941f7b1b2a5ccc157ac2f94d94169..f2891539287733c6354a5322460c4e4e159b8765 100644
--- a/drivers/net/wireless/wl12xx/sdio_test.c
+++ b/drivers/net/wireless/wl12xx/sdio_test.c
@@ -417,6 +417,9 @@ static int __devinit wl1271_probe(struct sdio_func *func,
 	/* Grab access to FN0 for ELP reg. */
 	func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
 
+	/* Use block mode for transferring over one block size of data */
+	func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
+
 	wlan_data = wl12xx_get_platform_data();
 	if (IS_ERR(wlan_data)) {
 		ret = PTR_ERR(wlan_data);