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ASoC: fsl: fsl_spdif: Check for clk_prepare_enable() error
clk_prepare_enable() may fail, so we should better check its return value and propagate it in the case of error. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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@ -482,13 +482,18 @@ static int fsl_spdif_startup(struct snd_pcm_substream *substream,
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mask = SCR_TXFIFO_AUTOSYNC_MASK | SCR_TXFIFO_CTRL_MASK |
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SCR_TXSEL_MASK | SCR_USRC_SEL_MASK |
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SCR_TXFIFO_FSEL_MASK;
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for (i = 0; i < SPDIF_TXRATE_MAX; i++)
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clk_prepare_enable(spdif_priv->txclk[i]);
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for (i = 0; i < SPDIF_TXRATE_MAX; i++) {
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ret = clk_prepare_enable(spdif_priv->txclk[i]);
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if (ret)
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goto disable_txclk;
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}
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} else {
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scr = SCR_RXFIFO_FSEL_IF8 | SCR_RXFIFO_AUTOSYNC;
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mask = SCR_RXFIFO_FSEL_MASK | SCR_RXFIFO_AUTOSYNC_MASK|
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SCR_RXFIFO_CTL_MASK | SCR_RXFIFO_OFF_MASK;
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clk_prepare_enable(spdif_priv->rxclk);
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ret = clk_prepare_enable(spdif_priv->rxclk);
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if (ret)
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goto err;
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}
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regmap_update_bits(regmap, REG_SPDIF_SCR, mask, scr);
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@ -497,6 +502,9 @@ static int fsl_spdif_startup(struct snd_pcm_substream *substream,
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return 0;
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disable_txclk:
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for (i--; i >= 0; i--)
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clk_disable_unprepare(spdif_priv->txclk[i]);
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err:
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clk_disable_unprepare(spdif_priv->coreclk);
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