diff --git a/drivers/mfd/t7l66xb.c b/drivers/mfd/t7l66xb.c
index 875f7a875734252cd868996ec048a53793e9deb3..0a255c1f1ce7b60a3633b487ecaa18797eda43aa 100644
--- a/drivers/mfd/t7l66xb.c
+++ b/drivers/mfd/t7l66xb.c
@@ -108,7 +108,7 @@ static int t7l66xb_mmc_disable(struct platform_device *mmc)
 
 /*--------------------------------------------------------------------------*/
 
-static const struct tmio_mmc_data t7166xb_mmc_data = {
+static struct tmio_mmc_data t7166xb_mmc_data = {
 	.hclk = 24000000,
 };
 
diff --git a/drivers/mfd/tc6387xb.c b/drivers/mfd/tc6387xb.c
index c3993ac20542db00bdc2e5e6a8c54a244d3a3e4a..3280ab33f88ab20944e0ec15018236d73f207f5e 100644
--- a/drivers/mfd/tc6387xb.c
+++ b/drivers/mfd/tc6387xb.c
@@ -75,7 +75,7 @@ static int tc6387xb_mmc_disable(struct platform_device *mmc)
 
 /*--------------------------------------------------------------------------*/
 
-const static struct tmio_mmc_data tc6387xb_mmc_data = {
+static struct tmio_mmc_data tc6387xb_mmc_data = {
 	.hclk = 24000000,
 };
 
diff --git a/drivers/mfd/tc6393xb.c b/drivers/mfd/tc6393xb.c
index 9d2abb5d6e2cd4c69f4b535583b41fa89fce2242..1429a7341a9a976481b2ba11ad29258ba2cc6ac2 100644
--- a/drivers/mfd/tc6393xb.c
+++ b/drivers/mfd/tc6393xb.c
@@ -136,7 +136,7 @@ static int tc6393xb_nand_enable(struct platform_device *nand)
 	return 0;
 }
 
-const static struct tmio_mmc_data tc6393xb_mmc_data = {
+static struct tmio_mmc_data tc6393xb_mmc_data = {
 	.hclk = 24000000,
 };
 
diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h
index c377118884e66bd61fd87d5ffaa247effd5fb5ae..6b9c5d06690c8d9f82bd99a19e215b9fc8e1a683 100644
--- a/include/linux/mfd/tmio.h
+++ b/include/linux/mfd/tmio.h
@@ -22,7 +22,7 @@
  * data for the MMC controller
  */
 struct tmio_mmc_data {
-	unsigned int		hclk;
+	const unsigned int		hclk;
 };
 
 /*