On 11/16/2013 03:49 AM, Lars-Peter Clausen wrote:
> On 11/15/2013 09:54 PM, Stephen Warren wrote:
>>
>> @@ -315,6 +343,7 @@ int snd_dmaengine_pcm_register(struct device *dev,
>> const struct snd_dmaengine_pcm_config *config, unsigned int flags)
>> {
>> struct dmaengine_pcm *pcm;
>> + int ret;
>>
>> pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
>> if (!pcm)
>> @@ -323,14 +352,26 @@ int snd_dmaengine_pcm_register(struct device *dev,
>> pcm->config = config;
>> pcm->flags = flags;
>>
>> - dmaengine_pcm_request_chan_of(pcm, dev);
>> + ret = dmaengine_pcm_request_chan_of(pcm, dev);
>> + if (ret)
>> + goto err_free_pcm;
>>
>
> We should still call dmaengine_pcm_release_chan() in case requesting the
> first channel succeeded, but the second did not.
Oh yes, I'd meant to do that. I'll modify that goto, and remove the
now-unused err_free_pcm label. Thanks.
>
>> if (flags & SND_DMAENGINE_PCM_FLAG_NO_RESIDUE)
>> - return snd_soc_add_platform(dev, &pcm->platform,
>> + ret = snd_soc_add_platform(dev, &pcm->platform,
>> &dmaengine_no_residue_pcm_platform);
>> else
>> - return snd_soc_add_platform(dev, &pcm->platform,
>> + ret = snd_soc_add_platform(dev, &pcm->platform,
>> &dmaengine_pcm_platform);
>> + if (ret)
>> + goto err_free_dma;
>> +
>> + return 0;
>> +
>> +err_free_dma:
>> + dmaengine_pcm_release_chan(pcm);
>> +err_free_pcm:
>> + kfree(pcm);
>> + return ret;
>> }
>> EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_register);
> [...]
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