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Message-ID: <Pine.LNX.4.64.0908012149570.25693@ask.diku.dk>
Date: Sat, 1 Aug 2009 21:50:31 +0200 (CEST)
From: Julia Lawall <julia@...u.dk>
To: linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH 4/5] drivers/net/wireless: Use DIV_ROUND_CLOSEST
From: Julia Lawall <julia@...u.dk>
The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d
but is perhaps more readable.
The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@haskernel@
@@
#include <linux/kernel.h>
@depends on haskernel@
expression x,__divisor;
@@
- (((x) + ((__divisor) / 2)) / (__divisor))
+ DIV_ROUND_CLOSEST(x,__divisor)
// </smpl>
Signed-off-by: Julia Lawall <julia@...u.dk>
---
drivers/net/wireless/strip.c | 9 ++++++---
1 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/strip.c b/drivers/net/wireless/strip.c
index 73300c2..8eabb56 100644
--- a/drivers/net/wireless/strip.c
+++ b/drivers/net/wireless/strip.c
@@ -1550,9 +1550,12 @@ static int strip_xmit(struct sk_buff *skb, struct net_device *dev)
if (time_after(jiffies, strip_info->pps_timer + HZ)) {
unsigned long t = jiffies - strip_info->pps_timer;
- unsigned long rx_pps_count = (strip_info->rx_pps_count * HZ * 8 + t / 2) / t;
- unsigned long tx_pps_count = (strip_info->tx_pps_count * HZ * 8 + t / 2) / t;
- unsigned long sx_pps_count = (strip_info->sx_pps_count * HZ * 8 + t / 2) / t;
+ unsigned long rx_pps_count =
+ DIV_ROUND_CLOSEST(strip_info->rx_pps_count*HZ*8, t);
+ unsigned long tx_pps_count =
+ DIV_ROUND_CLOSEST(strip_info->tx_pps_count*HZ*8, t);
+ unsigned long sx_pps_count =
+ DIV_ROUND_CLOSEST(strip_info->sx_pps_count*HZ*8, t);
strip_info->pps_timer = jiffies;
strip_info->rx_pps_count = 0;
--
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