linux-kernel - [PATCH 4/6] ALSA: timer: Use common error handling code in alsa_timer

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Date:   Wed, 23 Aug 2017 10:27:14 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     alsa-devel@...a-project.org, Arnd Bergmann <arnd@...db.de>,
        Arvind Yadav <arvind.yadav.cs@...il.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Ingo Molnar <mingo@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
        Takashi Sakamoto <o-takashi@...amocchi.jp>,
        Vegard Nossum <vegard.nossum@...cle.com>
Cc:     kernel-janitors@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 4/6] ALSA: timer: Use common error handling code in
 alsa_timer_init()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 23 Aug 2017 09:30:41 +0200

Add a jump target so that a bit of exception handling can be better reused
at the end of this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 sound/core/timer.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/sound/core/timer.c b/sound/core/timer.c
index a9b9a277e00c..6d73a63f6e2b 100644
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -2096,8 +2096,7 @@ static int __init alsa_timer_init(void)
 	err = snd_timer_register_system();
 	if (err < 0) {
 		pr_err("ALSA: unable to register system timer (%i)\n", err);
-		put_device(&timer_dev);
-		return err;
+		goto put_timer;
 	}
 
 	err = snd_register_device(SNDRV_DEVICE_TYPE_TIMER, NULL, 0,
@@ -2105,12 +2104,15 @@ static int __init alsa_timer_init(void)
 	if (err < 0) {
 		pr_err("ALSA: unable to register timer device (%i)\n", err);
 		snd_timer_free_all();
-		put_device(&timer_dev);
-		return err;
+		goto put_timer;
 	}
 
 	snd_timer_proc_init();
 	return 0;
+
+put_timer:
+	put_device(&timer_dev);
+	return err;
 }
 
 static void __exit alsa_timer_exit(void)
-- 
2.14.0