From mboxrd@z Thu Jan 1 00:00:00 1970 From: Axel Lin Subject: [PATCH 4/12] wm8523: fix resource reclaim in wm8523_register error path Date: Thu, 15 Jul 2010 10:56:30 +0800 Message-ID: <1279162590.29294.12.camel@mola> References: <1279162147.29294.2.camel@mola> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1279162147.29294.2.camel@mola> Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel Cc: Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Tejun Heo , alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org This patch includes below fixes: 1. If another WM8523 is registered, need to kfree wm8523 before return -EINVAL. 2. If snd_soc_register_codec failed, goto error path to properly free resources. 3. Instead of using mixed in-line and goto style cleanup, use goto style error handling if snd_soc_register_dai failed. Signed-off-by: Axel Lin --- sound/soc/codecs/wm8523.c | 10 ++++++---- 1 files changed, 6 insertions(+), 4 deletions(-) diff --git a/sound/soc/codecs/wm8523.c b/sound/soc/codecs/wm8523.c index 37242a7..0ad039b 100644 --- a/sound/soc/codecs/wm8523.c +++ b/sound/soc/codecs/wm8523.c @@ -482,7 +482,8 @@ static int wm8523_register(struct wm8523_priv *wm8523, if (wm8523_codec) { dev_err(codec->dev, "Another WM8523 is registered\n"); - return -EINVAL; + ret = -EINVAL; + goto err; } mutex_init(&codec->mutex); @@ -570,18 +571,19 @@ static int wm8523_register(struct wm8523_priv *wm8523, ret = snd_soc_register_codec(codec); if (ret != 0) { dev_err(codec->dev, "Failed to register codec: %d\n", ret); - return ret; + goto err_enable; } ret = snd_soc_register_dai(&wm8523_dai); if (ret != 0) { dev_err(codec->dev, "Failed to register DAI: %d\n", ret); - snd_soc_unregister_codec(codec); - return ret; + goto err_codec; } return 0; +err_codec: + snd_soc_unregister_codec(codec); err_enable: regulator_bulk_disable(ARRAY_SIZE(wm8523->supplies), wm8523->supplies); err_get: -- 1.5.4.3