diff --git a/drivers/spi/mpc8xxx_spi.c b/drivers/spi/mpc8xxx_spi.c
index bbfc259..348361a 100644
--- a/drivers/spi/mpc8xxx_spi.c
+++ b/drivers/spi/mpc8xxx_spi.c
@@ -77,7 +77,7 @@
 {
 	volatile spi8xxx_t *spi = &((immap_t *) (CONFIG_SYS_IMMR))->spi;
 	unsigned int tmpdout, tmpdin, event;
-	int numBlks = bitlen / 32 + (bitlen % 32 ? 1 : 0);
+	int numBlks = DIV_ROUND_UP(bitlen, 32);
 	int tm, isRead = 0;
 	unsigned char charSize = 32;