On Fri, Dec 20, 2013 at 12:38:27PM +0200, Jyri Sarha wrote:
> +static int evm_startup(struct snd_pcm_substream *substream)
> +{
> + struct snd_soc_pcm_runtime *rtd = substream->private_data;
> + struct snd_soc_card *soc_card = rtd->codec->card;
> + struct clk *mclk = ((struct snd_soc_card_drvdata_davinci *)
> + snd_soc_card_get_drvdata(soc_card))->mclk;
Why do you need to cast away void? Ths indicates something is going
wrong here though I can't see what.
> + mclk = of_clk_get_by_name(np, "ti,codec-clock");
> + if (PTR_ERR(mclk) == -EPROBE_DEFER) {
> + return -EPROBE_DEFER;
> + } else if (IS_ERR(mclk)) {
> + dev_dbg(&pdev->dev, "Codec clock not found.\n");
> + mclk = NULL;
> + }
The driver will unconditionally enable and disable the clock which I'd
not expect to work well if we got an error, I'd expect either NULL checks
on use or a fixed clock to be registered from code in the case where
we're using the old binding.
I'd also expect to see devm_clk_get() used here, with the standard
clock-names based lookup from DT.
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