linux-kernel - [PATCHv4 05/11] omap3isp: Use *_dec_not_zero instead of *_add

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Message-Id: <1311760070-21532-5-git-send-email-sven@narfation.org>
Date:	Wed, 27 Jul 2011 11:47:44 +0200
From:	Sven Eckelmann <sven@...fation.org>
To:	linux-arch@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Sven Eckelmann <sven@...fation.org>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	linux-media@...r.kernel.org
Subject: [PATCHv4 05/11] omap3isp: Use *_dec_not_zero instead of *_add_unless

atomic_dec_not_zero is defined for each architecture through
<linux/atomic.h> to provide the functionality of
atomic_add_unless(x, -1, 0).

Signed-off-by: Sven Eckelmann <sven@...fation.org>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: linux-media@...r.kernel.org
---
 drivers/media/video/omap3isp/ispstat.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/media/video/omap3isp/ispstat.c b/drivers/media/video/omap3isp/ispstat.c
index b44cb68..81b1ec9 100644
--- a/drivers/media/video/omap3isp/ispstat.c
+++ b/drivers/media/video/omap3isp/ispstat.c
@@ -652,7 +652,7 @@ static int isp_stat_buf_process(struct ispstat *stat, int buf_state)
 {
 	int ret = STAT_NO_BUF;
 
-	if (!atomic_add_unless(&stat->buf_err, -1, 0) &&
+	if (!atomic_dec_not_zero(&stat->buf_err) &&
 	    buf_state == STAT_BUF_DONE && stat->state == ISPSTAT_ENABLED) {
 		ret = isp_stat_buf_queue(stat);
 		isp_stat_buf_next(stat);
-- 
1.7.5.4

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