[alsa-devel] [PATCH] ASoC: codecs: 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 --- sound/soc/codecs/dmic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/codecs/dmic.c b/sound/soc/codecs/dmic.c index c88f974ebe3e..cf83c423394d 100644 --- a/sound/soc/codecs/dmic.c +++ b/sound/soc/codecs/dmic.c @@ -113,7 +113,7 @@ static int dmic_dev_probe(struct platform_device *pdev)
if (pdev->dev.of_node) { err = of_property_read_u32(pdev->dev.of_node, "num-channels", &chans); - if (err && (err != -ENOENT)) + if (err && (err != -EINVAL)) return err;
if (!err) {
On Fri, Jan 19, 2018 at 03:36:50PM -0800, Matthias Kaehlcke wrote:
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
Please submit patches using subject lines reflecting the style for the subsystem. This makes it easier for people to identify relevant patches. Look at what existing commits in the area you're changing are doing and make sure your subject lines visually resemble what they're doing.
The patch
ASoC: dmic: Fix check of return value from read of 'num-channels'
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
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Thanks, Mark
From 35b84bf0614a7da98bfbbac70ed3d01c3b5b6c58 Mon Sep 17 00:00:00 2001
From: Matthias Kaehlcke mka@chromium.org Date: Fri, 19 Jan 2018 15:36:50 -0800 Subject: [PATCH] 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 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/codecs/dmic.c b/sound/soc/codecs/dmic.c index c88f974ebe3e..cf83c423394d 100644 --- a/sound/soc/codecs/dmic.c +++ b/sound/soc/codecs/dmic.c @@ -113,7 +113,7 @@ static int dmic_dev_probe(struct platform_device *pdev)
if (pdev->dev.of_node) { err = of_property_read_u32(pdev->dev.of_node, "num-channels", &chans); - if (err && (err != -ENOENT)) + if (err && (err != -EINVAL)) return err;
if (!err) {
participants (2)
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Mark Brown -
Matthias Kaehlcke