linux-kernel - [PATCH 4.4 44/53] ASoC: simple-card: dont fail if sysclk setting is not supported

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Date:   Mon, 28 Aug 2017 10:05:49 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Aaro Koskinen <aaro.koskinen@....fi>,
        Andrew Lunn <andrew@...n.ch>, Mark Brown <broonie@...nel.org>,
        Thong Ho <thong.ho.px@....renesas.com>,
        Nhan Nguyen <nhan.nguyen.yb@...esas.com>
Subject: [PATCH 4.4 44/53] ASoC: simple-card: dont fail if sysclk setting is not supported

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Aaro Koskinen <aaro.koskinen@....fi>

commit ee43a1a0cd2a8f33cddfa1323a60b5cfcf865ba0 upstream.

Commit e22579713ae1 ("ASoC: simple card: set cpu-dai sysclk
with mclk-fs") added sysclk / SND_SOC_CLOCK_OUT setting, that makes
asoc_simple_card_hw_params fail if the operation is not supported,
although the intention clearly was to ignore ENOTSUPP. Fix it.

The patch fixes audio playback on Kirkwood / OpenRD client,
where the following errors are seen:

	asoc-simple-card sound: ASoC: machine hw_params failed: -524
	alsa-lib: /alsa-lib-1.0.28/src/pcm/pcm_hw.c:327:(snd_pcm_hw_hw_params) SNDRV_PCM_IOCTL_HW_PARAMS failed (-524): Unknown error 524

Fixes: e22579713ae1 ("ASoC: simple card: set cpu-dai sysclk with mclk-fs")
Signed-off-by: Aaro Koskinen <aaro.koskinen@....fi>
Reviewed-by: Andrew Lunn <andrew@...n.ch>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Thong Ho <thong.ho.px@....renesas.com>
Signed-off-by: Nhan Nguyen <nhan.nguyen.yb@...esas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/soc/generic/simple-card.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -100,7 +100,7 @@ static int asoc_simple_card_hw_params(st
 		if (ret && ret != -ENOTSUPP)
 			goto err;
 	}
-
+	return 0;
 err:
 	return ret;
 }