ASoC: dmic: Fix check of return value from read of 'num-channels'
authorMatthias Kaehlcke <mka@chromium.org>
Fri, 19 Jan 2018 23:36:50 +0000 (15:36 -0800)
committerMark Brown <broonie@kernel.org>
Mon, 22 Jan 2018 12:20:46 +0000 (12:20 +0000)
commit35b84bf0614a7da98bfbbac70ed3d01c3b5b6c58
tree82ae84e6ebf99726291a5eff2b36fa0d6a2adab7
parent7fb59e940f6225beed0b24cd09e9fad9aebb7565
ASoC: dmic: Fix check of return value from read of 'num-channels'

Commit 7fb59e940f62 ("ASoC: codecs: dmic: Make number of channels
 configurable") introduces an optional property to the device tree
to specify the number of DMIC channels. dmic_codec_probe() uses
of_property_read_u32() to read the DT value, and expects a return
value of -ENOENT when the property does not exist. This expectation
is incorrect, the actual value returned in this case is -EINVAL (see
of_find_property_value_of_size(), which is called under the hood).
Check for -EINVAL instead.

Fixes: 7fb59e940f62 ("ASoC: codecs: dmic: Make number of channels configurable")
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
sound/soc/codecs/dmic.c