diff --git a/arch/arm/mach-stm/speed-imx23.c b/arch/arm/mach-stm/speed-imx23.c
index 7418ad5..f32ae92 100644
--- a/arch/arm/mach-stm/speed-imx23.c
+++ b/arch/arm/mach-stm/speed-imx23.c
@@ -244,8 +244,7 @@
 		printf("Cannot setup SSP unit clock to %u Hz, base clock is only %u Hz\n", nc, ssp_div);
 		ssp_div = 1U;
 	} else {
-		ssp_div += nc - 1U;
-		ssp_div /= nc;
+		ssp_div = DIV_ROUND_UP(ssp_div, nc);
 		if (ssp_div > CLKCTRL_SSP_DIV_MASK)
 			ssp_div = CLKCTRL_SSP_DIV_MASK;
 	}
diff --git a/drivers/spi/imx_spi.c b/drivers/spi/imx_spi.c
index 2ad1bfa..1857d6c 100644
--- a/drivers/spi/imx_spi.c
+++ b/drivers/spi/imx_spi.c
@@ -224,9 +224,6 @@
 	return readl(base + CSPI_2_3_RXDATA);
 }
 
-/* FIXME: include/linux/kernel.h */
-#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
-
 static unsigned int cspi_2_3_clkdiv(unsigned int fin, unsigned int fspi)
 {
 	/*
diff --git a/include/common.h b/include/common.h
index a14bfc1..be83a31 100644
--- a/include/common.h
+++ b/include/common.h
@@ -222,4 +222,6 @@
 
 #define IOMEM(addr)	((void __force __iomem *)(addr))
 
+#define DIV_ROUND_UP(n,d)	(((n) + (d) - 1) / (d))
+
 #endif	/* __COMMON_H_ */