mmc: atmel-mci: use ATMEL_PDC_SCND_BUF_OFF instead of a literal value

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

2 files changed, 4 insertions, 2 deletions

diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index caae967dcafe..c0a0659261aa 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -603,8 +603,8 @@ static void atmci_pdc_set_single_buf(struct atmel_mci *host,
         }
 
         if (buf_nb == PDC_SECOND_BUF) {
-                pointer_reg += 0x10;
-                counter_reg += 0x10;
+                pointer_reg += ATMEL_PDC_SCND_BUF_OFF;
+                counter_reg += ATMEL_PDC_SCND_BUF_OFF;
         }
 
         atmci_writel(host, pointer_reg, sg_dma_address(host->sg));
diff --git a/include/linux/atmel_pdc.h b/include/linux/atmel_pdc.h
index 5058a31d2ce8..63499ce806ea 100644
--- a/include/linux/atmel_pdc.h
+++ b/include/linux/atmel_pdc.h
@@ -33,4 +33,6 @@
 
 #define ATMEL_PDC_PTSR          0x124   /* Transfer Status Register */
 
+#define ATMEL_PDC_SCND_BUF_OFF  0x10    /* Offset between first and second buffer registers */
+
 #endif