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ASoC: soc-generic-dmaengine-pcm: Add a DMA debugfs_prefix entry 

After the conversion from platform to component the following warnings
are seen:

fsl-ssi-dai 2028000.ssi: ASoC: Failed to create component debugfs
directory
fsl-spdif-dai 2004000.spdif: ASoC: Failed to create component debugfs
directory

As explained by Mark Brown:

"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."

Disambiguate the DMA component name by adding a "dma" debugfs_prefix
entry.

Suggested-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
hifive-unleashed-5.1
Fabio Estevam 2018-02-21 14:57:33 -03:00 committed by Mark Brown
parent 7928b2cbe5
commit f0b3bdbd5c
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1 changed files with 3 additions and 0 deletions
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3
sound/soc/soc-generic-dmaengine-pcm.c
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@ -431,6 +431,9 @@ int snd_dmaengine_pcm_register(struct device *dev,
if (!pcm)
return -ENOMEM;
#ifdef CONFIG_DEBUG_FS
pcm->component.debugfs_prefix = "dma";
#endif
pcm->config = config;
pcm->flags = flags;