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ASoC: kirkwood: fix loss of external clock at probe time

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At probe time, when the clock driver is not yet initialized, the
external clock of the kirkwood sound device will not be usable.

This patch fixes this problem defering the device probe.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Jean-Francois Moine 2013-09-21 12:00:36 +02:00 committed by Mark Brown
parent b51600c019
commit 84aac6c79b
1 changed files with 4 additions and 1 deletions
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5
sound/soc/kirkwood/kirkwood-i2s.c
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@ -496,7 +496,10 @@ static int kirkwood_i2s_dev_probe(struct platform_device *pdev)
return err; return err;
priv->extclk = devm_clk_get(&pdev->dev, "extclk"); priv->extclk = devm_clk_get(&pdev->dev, "extclk");
if (!IS_ERR(priv->extclk)) { if (IS_ERR(priv->extclk)) {
if (PTR_ERR(priv->extclk) == -EPROBE_DEFER)
return -EPROBE_DEFER;
} else {
if (priv->extclk == priv->clk) { if (priv->extclk == priv->clk) {
devm_clk_put(&pdev->dev, priv->extclk); devm_clk_put(&pdev->dev, priv->extclk);
priv->extclk = ERR_PTR(-EINVAL); priv->extclk = ERR_PTR(-EINVAL);