On Thu, Apr 30, 2015 at 06:17:24PM +0100, Srinivas Kandagatla wrote:

> +	if (!drvdata->variant->no_osr_clk) {
> +		ret = clk_prepare_enable(drvdata->mi2s_osr_clk[dai->id]);

Can we do this by checking to see if the clock is set to IS_ERR()
instead?  That's what we're doing elsewhere for possibly optional
clocks.