hp100: use roundup instead of open coding

Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/hp100.c

@@ -1212,7 +1212,7 @@ static int hp100_init_rxpdl(struct net_device *dev,
 	*(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr);	/* Address Frag 1 */
 	*(pdlptr + 3) = 4;	/* Length  Frag 1 */
 
-	return ((((MAX_RX_FRAG * 2 + 2) + 3) / 4) * 4);
+	return roundup(MAX_RX_FRAG * 2 + 2, 4);
 }
 
 
@@ -1227,7 +1227,7 @@ static int hp100_init_txpdl(struct net_device *dev,
 	ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr);	/* +1 */
 	ringptr->skb = (void *) NULL;
 
-	return ((((MAX_TX_FRAG * 2 + 2) + 3) / 4) * 4);
+	return roundup(MAX_TX_FRAG * 2 + 2, 4);
 }
 
 /*
@@ -1256,7 +1256,7 @@ static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
 	/* Note: This depends on the alloc_skb functions allocating more
 	 * space than requested, i.e. aligning to 16bytes */
 
-	ringptr->skb = dev_alloc_skb(((MAX_ETHER_SIZE + 2 + 3) / 4) * 4);
+	ringptr->skb = dev_alloc_skb(roundup(MAX_ETHER_SIZE + 2, 4));
 
 	if (NULL != ringptr->skb) {
 		/*
@@ -1279,7 +1279,7 @@ static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
 #ifdef HP100_DEBUG_BM
 		printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
 				     dev->name, (u_int) ringptr->pdl,
-				     ((MAX_ETHER_SIZE + 2 + 3) / 4) * 4,
+				     roundup(MAX_ETHER_SIZE + 2, 4),
 				     (unsigned int) ringptr->skb->data);
 #endif