diff --git a/drivers/mmc/arm_pl180_mmci.c b/drivers/mmc/arm_pl180_mmci.c
index 245f482..ed296ee 100644
--- a/drivers/mmc/arm_pl180_mmci.c
+++ b/drivers/mmc/arm_pl180_mmci.c
@@ -434,6 +434,8 @@
 		return -1;
 	}
 
+	dev->b_max = 0;
+
 	mmc_register(dev);
 	debug("registered mmc interface number is:%d\n", dev->block_dev.dev);
 
diff --git a/drivers/mmc/bfin_sdh.c b/drivers/mmc/bfin_sdh.c
index 31b6459..bc9057f 100644
--- a/drivers/mmc/bfin_sdh.c
+++ b/drivers/mmc/bfin_sdh.c
@@ -257,6 +257,8 @@
 	mmc->f_min = mmc->f_max >> 9;
 	mmc->block_dev.part_type = PART_TYPE_DOS;
 
+	mmc->b_max = 0;
+
 	mmc_register(mmc);
 
 	return 0;
diff --git a/drivers/mmc/davinci_mmc.c b/drivers/mmc/davinci_mmc.c
index d5d19eb..5d918e6 100644
--- a/drivers/mmc/davinci_mmc.c
+++ b/drivers/mmc/davinci_mmc.c
@@ -394,9 +394,8 @@
 	mmc->voltages = host->voltages;
 	mmc->host_caps = host->host_caps;
 
-#ifdef CONFIG_MMC_MBLOCK
 	mmc->b_max = DAVINCI_MAX_BLOCKS;
-#endif
+
 	mmc_register(mmc);
 
 	return 0;
diff --git a/drivers/mmc/gen_atmel_mci.c b/drivers/mmc/gen_atmel_mci.c
index 2984d64..6577925 100644
--- a/drivers/mmc/gen_atmel_mci.c
+++ b/drivers/mmc/gen_atmel_mci.c
@@ -348,6 +348,8 @@
 	mmc->f_min = get_mci_clk_rate() / (2*256);
 	mmc->f_max = get_mci_clk_rate() / (2*1);
 
+	mmc->b_max = 0;
+
 	mmc_register(mmc);
 
 	return 0;
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index f27b7c7..f6d31f5 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -243,8 +243,7 @@
 		return 0;
 
 	do {
-		cur = (blocks_todo > CONFIG_SYS_MMC_MAX_BLK_COUNT) ?
-		       CONFIG_SYS_MMC_MAX_BLK_COUNT : blocks_todo;
+		cur = (blocks_todo > mmc->b_max) ?  mmc->b_max : blocks_todo;
 		if(mmc_write_blocks(mmc, start, cur, src) != cur)
 			return 0;
 		blocks_todo -= cur;
@@ -320,8 +319,7 @@
 		return 0;
 
 	do {
-		cur = (blocks_todo > CONFIG_SYS_MMC_MAX_BLK_COUNT) ?
-		       CONFIG_SYS_MMC_MAX_BLK_COUNT : blocks_todo;
+		cur = (blocks_todo > mmc->b_max) ?  mmc->b_max : blocks_todo;
 		if(mmc_read_blocks(mmc, dst, start, cur) != cur)
 			return 0;
 		blocks_todo -= cur;
@@ -1029,6 +1027,8 @@
 	mmc->block_dev.removable = 1;
 	mmc->block_dev.block_read = mmc_bread;
 	mmc->block_dev.block_write = mmc_bwrite;
+	if (!mmc->b_max)
+		mmc->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
 
 	INIT_LIST_HEAD (&mmc->link);
 
diff --git a/drivers/mmc/mxcmmc.c b/drivers/mmc/mxcmmc.c
index 5963953..ab1fc82 100644
--- a/drivers/mmc/mxcmmc.c
+++ b/drivers/mmc/mxcmmc.c
@@ -511,6 +511,8 @@
 	mmc->f_min = imx_get_perclk2() >> 7;
 	mmc->f_max = imx_get_perclk2() >> 1;
 
+	mmc->b_max = 0;
+
 	mmc_register(mmc);
 
 	return 0;
diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index 6f2280a..dcbde89 100644
--- a/drivers/mmc/omap_hsmmc.c
+++ b/drivers/mmc/omap_hsmmc.c
@@ -465,6 +465,8 @@
 	mmc->f_min = 400000;
 	mmc->f_max = 52000000;
 
+	mmc->b_max = 0;
+
 	mmc_register(mmc);
 
 	return 0;
diff --git a/drivers/mmc/s5p_mmc.c b/drivers/mmc/s5p_mmc.c
index 0323800..668c28b 100644
--- a/drivers/mmc/s5p_mmc.c
+++ b/drivers/mmc/s5p_mmc.c
@@ -466,6 +466,7 @@
 
 	mmc_host[dev_index].clock = 0;
 	mmc_host[dev_index].reg = s5p_get_base_mmc(dev_index);
+	mmc->m_bmax = 0;
 	mmc_register(mmc);
 
 	return 0;