linux-kernel - [PATCH 9/13] ALSA: i2sbus: Delete an unnecessary check before the function call "snd_pcm_suspend

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Date:	Sun, 04 Jan 2015 14:21:43 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Jaroslav Kysela <perex@...ex.cz>,
	Johannes Berg <johannes@...solutions.net>,
	Takashi Iwai <tiwai@...e.de>, alsa-devel@...a-project.org,
	linuxppc-dev@...ts.ozlabs.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 9/13] ALSA: i2sbus: Delete an unnecessary check before the
 function call "snd_pcm_suspend_all"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 3 Jan 2015 20:43:01 +0100

The snd_pcm_suspend_all() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 sound/aoa/soundbus/i2sbus/core.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/sound/aoa/soundbus/i2sbus/core.c b/sound/aoa/soundbus/i2sbus/core.c
index 4e2b4fb..837ba99 100644
--- a/sound/aoa/soundbus/i2sbus/core.c
+++ b/sound/aoa/soundbus/i2sbus/core.c
@@ -381,10 +381,8 @@ static int i2sbus_suspend(struct macio_dev* dev, pm_message_t state)
 
 	list_for_each_entry(i2sdev, &control->list, item) {
 		/* Notify Alsa */
-		if (i2sdev->sound.pcm) {
-			/* Suspend PCM streams */
-			snd_pcm_suspend_all(i2sdev->sound.pcm);
-		}
+		/* Suspend PCM streams */
+		snd_pcm_suspend_all(i2sdev->sound.pcm);
 
 		/* Notify codecs */
 		list_for_each_entry(cii, &i2sdev->sound.codec_list, list) {
-- 
2.2.1

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