3 files changed, 5 insertions, 3 deletions

diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 48c465a8e34..58cf36e4467 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -30,7 +30,7 @@ static int sdio_read_fbr(struct sdio_func *func)
         unsigned char data;
 
         ret = mmc_io_rw_direct(func->card, 0, 0,
-                func->num * 0x100 + SDIO_FBR_STD_IF, 0, &data);
+                SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF, 0, &data);
         if (ret)
                 goto out;
 
@@ -38,7 +38,7 @@ static int sdio_read_fbr(struct sdio_func *func)
 
         if (data == 0x0f) {
                 ret = mmc_io_rw_direct(func->card, 0, 0,
-                        func->num * 0x100 + SDIO_FBR_STD_IF_EXT, 0, &data);
+                        SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF_EXT, 0, &data);
                 if (ret)
                         goto out;
         }
diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c
index ec806a1229b..d050c40cf04 100644
--- a/drivers/mmc/core/sdio_cis.c
+++ b/drivers/mmc/core/sdio_cis.c
@@ -145,7 +145,7 @@ static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
                         fn = 0;
 
                 ret = mmc_io_rw_direct(card, 0, 0,
-                                       fn * 0x100 + SDIO_FBR_CIS + i, 0, &x);
+                        SDIO_FBR_BASE(fn) + SDIO_FBR_CIS + i, 0, &x);
                 if (ret)
                         return ret;
                 ptr |= x << (i * 8);
diff --git a/include/linux/mmc/sdio.h b/include/linux/mmc/sdio.h
index 9b1ec76cac3..47ba464f517 100644
--- a/include/linux/mmc/sdio.h
+++ b/include/linux/mmc/sdio.h
@@ -132,6 +132,8 @@
  * Function Basic Registers (FBR)
  */
 
+#define SDIO_FBR_BASE(f)        ((f) * 0x100) /* base of function f's FBRs */
+
 #define SDIO_FBR_STD_IF         0x00
 
 #define  SDIO_FBR_SUPPORTS_CSA  0x40    /* supports Code Storage Area */