From c46e0079cec40b49fbdb86a088cfd50b250fef47 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Wed, 3 Nov 2010 15:04:45 +0800 Subject: ASoC: Fix snd_soc_register_dais error handling kzalloc for dai may fail at any iteration of the for loop, thus properly unregister already registered DAIs before return error. The error handling code in snd_soc_register_dais() already ensure all the DAIs are unregistered before return error, we can remove the error handling code to unregister DAIs in snd_soc_register_codec(). Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- sound/soc/soc-core.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'sound/soc/soc-core.c') diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 614a8b30d87b..441285ade024 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -3043,8 +3043,10 @@ int snd_soc_register_dais(struct device *dev, for (i = 0; i < count; i++) { dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL); - if (dai == NULL) - return -ENOMEM; + if (dai == NULL) { + ret = -ENOMEM; + goto err; + } /* create DAI component name */ dai->name = fmt_multiple_name(dev, &dai_drv[i]); @@ -3263,9 +3265,6 @@ int snd_soc_register_codec(struct device *dev, return 0; error: - for (i--; i >= 0; i--) - snd_soc_unregister_dai(dev); - if (codec->reg_cache) kfree(codec->reg_cache); kfree(codec->name); -- cgit v1.2.1 From 1dcb4f38e5bc28dfce0f8c7eef184a090b03bfc7 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Mon, 6 Dec 2010 16:48:03 +0800 Subject: ASoC: Hold client_mutex while calling snd_soc_instantiate_cards() As the comments of snd_soc_instantiate_cards() said, snd_soc_instantiate_cards() must be called with client_mutex. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- sound/soc/soc-core.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'sound/soc/soc-core.c') diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 441285ade024..02ae7bea3b50 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -3072,7 +3072,9 @@ int snd_soc_register_dais(struct device *dev, pr_debug("Registered DAI '%s'\n", dai->name); } + mutex_lock(&client_mutex); snd_soc_instantiate_cards(); + mutex_unlock(&client_mutex); return 0; err: -- cgit v1.2.1 From 681e36924788aeea2717c07cc42a21c9c86d7559 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 7 Dec 2010 20:56:30 +0800 Subject: ASoC: Fix resource leak if soc_register_ac97_dai_link failed Properly free the resources in the case of soc_register_ac97_dai_link failure. Signed-off-by: Axel Lin Acked-by: Liam Girdwood Signed-off-by: Mark Brown --- sound/soc/soc-core.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'sound/soc/soc-core.c') diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 02ae7bea3b50..85b7d548f167 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1619,12 +1619,14 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card) #ifdef CONFIG_SND_SOC_AC97_BUS /* register any AC97 codecs */ for (i = 0; i < card->num_rtd; i++) { - ret = soc_register_ac97_dai_link(&card->rtd[i]); - if (ret < 0) { - printk(KERN_ERR "asoc: failed to register AC97 %s\n", card->name); - goto probe_dai_err; - } + ret = soc_register_ac97_dai_link(&card->rtd[i]); + if (ret < 0) { + printk(KERN_ERR "asoc: failed to register AC97 %s\n", card->name); + while (--i >= 0) + soc_unregister_ac97_dai_link(&card->rtd[i]); + goto probe_dai_err; } + } #endif card->instantiated = 1; -- cgit v1.2.1