On Tue, Feb 20, 2018 at 04:37:33PM -0300, Fabio Estevam wrote: > Thanks for your clarification. > What is the best way to avoid the "Failed to create > component debugfs directory" warning? It's a legit warning - we shouldn't really be creating two components for the same device. However this is a bit of a corner case as it's the dmaengine platform driver which is kind of a virtual device, it's not really the device that we use with DMA that's being represented but rather the link between that and the DMA controller. Does the below patch (completely untested) help here? It adds a prefix to the name for deduplication. diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c index d53786498b61..d5a6eea64036 100644 --- a/sound/soc/soc-generic-dmaengine-pcm.c +++ b/sound/soc/soc-generic-dmaengine-pcm.c @@ -431,6 +431,7 @@ int snd_dmaengine_pcm_register(struct device *dev, if (!pcm) return -ENOMEM; + pcm->platform.component.name_prefix = "dma"; pcm->config = config; pcm->flags = flags;
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