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Kuninori Morimoto bac5611371 ASoC: rsnd: don't fallback to PIO mode when -EPROBE_DEFER

[ Upstream commit 6c92d5a274 ]

Current rsnd driver will fallback to PIO mode if it can't get DMA
handler. But, DMA might return -EPROBE_DEFER when probe timing.
This driver always fallback to PIO mode especially from
commit ac6bbf0cdf ("iommu: Remove IOMMU_OF_DECLARE") because
of this reason.

The DMA driver will be probed later, but sound driver might be
probed as PIO mode in such case. This patch fixup this issue.
Then, -EPROBE_DEFER is not error. Thus, let's don't indicate error
message in such case.
And it needs to call rsnd_adg_remove() individually if probe failed,
because it registers clk which should be unregister.

Maybe PIO fallback feature itself is not needed,
but let's keep it so far.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-10-18 09:16:21 +02:00

rcar

ASoC: rsnd: don't fallback to PIO mode when -EPROBE_DEFER

2018-10-18 09:16:21 +02:00

dma-sh7760.c

ASoC: sh: make snd_pcm_hardware const

2017-08-17 17:57:21 +01:00

fsi.c

Merge remote-tracking branches 'asoc/topic/dwc', 'asoc/topic/es8316', 'asoc/topic/fsi', 'asoc/topic/fsl' and 'asoc/topic/hdmi' into asoc-next

2017-09-01 12:12:36 +01:00

hac.c

ASoC: sh: hac: add missing "int ret"