diff --git a/drivers/mmc/host/rk_sdmmc_ops.c b/drivers/mmc/host/rk_sdmmc_ops.c
index 96f20d2dcfc7..47967a40915a 100644
--- a/drivers/mmc/host/rk_sdmmc_ops.c
+++ b/drivers/mmc/host/rk_sdmmc_ops.c
@@ -131,7 +131,7 @@ static int rk_emmc_wait_busy(void)
 /*
  * Transfer a single sector of kernel addressable data
  */
-int rk_emmc_transfer(u8 *buffer, unsigned addr, unsigned blksz, int write)
+int rk_emmc_transfer(u8 *buffer, unsigned int addr, unsigned int datasz, int write)
 {
 	int ret = 0;
 	enum emmc_area_type areatype;
@@ -150,9 +150,9 @@ int rk_emmc_transfer(u8 *buffer, unsigned addr, unsigned blksz, int write)
 	mrq.data = &data;
 	mrq.stop = &stop;
 
-	sg_init_one(&sg, buffer, blksz);
+	sg_init_one(&sg, buffer, datasz);
 
-	rk_emmc_prepare_mrq(&mrq, &sg, 1, addr, 1, blksz, write);
+	rk_emmc_prepare_mrq(&mrq, &sg, 1, addr, datasz / BLKSZ, BLKSZ, write);
 
 	mmc_claim_host(this_card->host);
 
diff --git a/drivers/mmc/host/rk_sdmmc_ops.h b/drivers/mmc/host/rk_sdmmc_ops.h
index 8261d69f561d..81890ab6a94e 100644
--- a/drivers/mmc/host/rk_sdmmc_ops.h
+++ b/drivers/mmc/host/rk_sdmmc_ops.h
@@ -6,6 +6,6 @@
 #ifndef _RK_SDMMC_OPS_H_
 #define _RK_SDMMC_OPS_H_
 
-int rk_emmc_transfer(u8 *buffer, unsigned int addr, unsigned int blksz, int write);
+int rk_emmc_transfer(u8 *buffer, unsigned int addr, unsigned int datasz, int write);
 
 #endif