drivers/net/wan: Use DIV_ROUND_UP

Author: Julia Lawall <julia@diku.dk>

The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.

An extract of the semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// 
@haskernel@
@@

#include 

@depends on haskernel@
expression n,d;
@@

(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
|
- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)

@depends on haskernel@
expression n,d;
@@

- DIV_ROUND_UP((n),d)
+ DIV_ROUND_UP(n,d)

@depends on haskernel@
expression n,d;
@@

- DIV_ROUND_UP(n,(d))
+ DIV_ROUND_UP(n,d)
// 

Signed-off-by: Julia Lawall 
Signed-off-by: Andrew Morton 
Signed-off-by: David S. Miller 

---
 drivers/net/wan/sbni.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 
diff --git a/drivers/net/wan/sbni.c b/drivers/net/wan/sbni.c
index 6596cd0..f972fef 100644
--- a/drivers/net/wan/sbni.c
+++ b/drivers/net/wan/sbni.c
@@ -856,7 +856,7 @@ prepare_to_send( struct sk_buff  *skb,  struct net_device  *dev )
 		len = SBNI_MIN_LEN;
 
 	nl->tx_buf_p	= skb;
-	nl->tx_frameno	= (len + nl->maxframe - 1) / nl->maxframe;
+	nl->tx_frameno	= DIV_ROUND_UP(len, nl->maxframe);
 	nl->framelen	= len < nl->maxframe  ?  len  :  nl->maxframe;
 
 	outb( inb( dev->base_addr + CSR0 ) | TR_REQ,  dev->base_addr + CSR0 );