? 09/14/2014 12:37 AM, Mark Brown ??: > On Sat, Sep 13, 2014 at 08:43:13AM +0800, Jianqun wrote: > >> +++ b/sound/soc/rockchip/rockchip_i2s.c >> @@ -423,6 +423,11 @@ static int rockchip_i2s_probe(struct platform_device *pdev) >> dev_err(&pdev->dev, "Can't retrieve i2s bus clock\n"); >> return PTR_ERR(i2s->hclk); >> } >> + ret = clk_prepare_enable(i2s->hclk); >> + if (ret) { >> + dev_err(i2s->dev, "hclock enable failed %d\n", ret); >> + return ret; >> + } > > BTW: you're also missing a clk_disable_unprepare() in the remove path > here, please send a followup fixing that. remove function has done the clk_disable_unprepare for "hclk". One more thing, since "i2s_clk" is enabled at runtime_resume, and is disabled in runtime_suspend, hasn't enable in probe, so do the "i2s_clk" to be disabled in remove ? The current driver has disable in remove. >