linux-kernel - [PATCH 1/1 linux-next] ttusb-dec: use swap() in swap

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Date:	Wed, 10 Jun 2015 18:32:44 +0200
From:	Fabian Frederick <fabf@...net.be>
To:	linux-kernel@...r.kernel.org
Cc:	Julia Lawall <Julia.Lawall@...6.fr>,
	Fabian Frederick <fabf@...net.be>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	linux-media@...r.kernel.org
Subject: [PATCH 1/1 linux-next] ttusb-dec: use swap() in swap_bytes()

Use kernel.h macro definition.

Thanks to Julia Lawall for Coccinelle scripting support.

Signed-off-by: Fabian Frederick <fabf@...net.be>
---
 drivers/media/usb/ttusb-dec/ttusb_dec.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/media/usb/ttusb-dec/ttusb_dec.c b/drivers/media/usb/ttusb-dec/ttusb_dec.c
index 322b53a..7c3a7c5 100644
--- a/drivers/media/usb/ttusb-dec/ttusb_dec.c
+++ b/drivers/media/usb/ttusb-dec/ttusb_dec.c
@@ -593,14 +593,9 @@ static void ttusb_dec_process_packet(struct ttusb_dec *dec)
 
 static void swap_bytes(u8 *b, int length)
 {
-	u8 c;
-
 	length -= length % 2;
-	for (; length; b += 2, length -= 2) {
-		c = *b;
-		*b = *(b + 1);
-		*(b + 1) = c;
-	}
+	for (; length; b += 2, length -= 2)
+		swap(*b, *(b + 1));
 }
 
 static void ttusb_dec_process_urb_frame(struct ttusb_dec *dec, u8 *b,
-- 
2.4.2

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