From: Jean Delvare <khali@linux-fr.org>
Date: Sat, 1 Sep 2012 17:53:57 +0000 (-0300)
Subject: [media] mceusb: Optimize DIV_ROUND_CLOSEST call
X-Git-Tag: firefly_0821_release~3680^2~275^2~1251
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ed7dd240075fabf38e489930e39eab2dfa836520;p=firefly-linux-kernel-4.4.55.git

[media] mceusb: Optimize DIV_ROUND_CLOSEST call

DIV_ROUND_CLOSEST is faster if the compiler knows it will only be
dealing with unsigned dividends.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
index a5c6c1c2af82..850547fe711c 100644
--- a/drivers/media/rc/mceusb.c
+++ b/drivers/media/rc/mceusb.c
@@ -627,7 +627,7 @@ static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf,
 			break;
 		case MCE_RSP_EQIRCFS:
 			period = DIV_ROUND_CLOSEST(
-					(1 << data1 * 2) * (data2 + 1), 10);
+					(1U << data1 * 2) * (data2 + 1), 10);
 			if (!period)
 				break;
 			carrier = (1000 * 1000) / period;