diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c
index 82b80d42f7ae92cc9bc48d74262af2ad0eb3f90a..88a94355ac90166c09286537151ce1b004ddb4d6 100644
--- a/drivers/mmc/host/tmio_mmc_core.c
+++ b/drivers/mmc/host/tmio_mmc_core.c
@@ -409,30 +409,29 @@ static void tmio_mmc_transfer_data(struct tmio_mmc_host *host,
 	 * Transfer the data
 	 */
 	if (host->pdata->flags & TMIO_MMC_32BIT_DATA_PORT) {
-		u8 data[4] = { };
+		u32 data = 0;
+		u32 *buf32 = (u32 *)buf;
 
 		if (is_read)
-			sd_ctrl_read32_rep(host, CTL_SD_DATA_PORT, (u32 *)buf,
+			sd_ctrl_read32_rep(host, CTL_SD_DATA_PORT, buf32,
 					   count >> 2);
 		else
-			sd_ctrl_write32_rep(host, CTL_SD_DATA_PORT, (u32 *)buf,
+			sd_ctrl_write32_rep(host, CTL_SD_DATA_PORT, buf32,
 					    count >> 2);
 
 		/* if count was multiple of 4 */
 		if (!(count & 0x3))
 			return;
 
-		buf8 = (u8 *)(buf + (count >> 2));
+		buf32 += count >> 2;
 		count %= 4;
 
 		if (is_read) {
-			sd_ctrl_read32_rep(host, CTL_SD_DATA_PORT,
-					   (u32 *)data, 1);
-			memcpy(buf8, data, count);
+			sd_ctrl_read32_rep(host, CTL_SD_DATA_PORT, &data, 1);
+			memcpy(buf32, &data, count);
 		} else {
-			memcpy(data, buf8, count);
-			sd_ctrl_write32_rep(host, CTL_SD_DATA_PORT,
-					    (u32 *)data, 1);
+			memcpy(&data, buf32, count);
+			sd_ctrl_write32_rep(host, CTL_SD_DATA_PORT, &data, 1);
 		}
 
 		return;