Re: [RFC PATCH v1 4/6] PM / devfreq: event: support rockchip dfi controller

hl
2016-06-06T06:19:12Z

Hi Thierry,

On 2016年06月04日 00:54, Thierry Reding wrote:
> On Fri, Jun 03, 2016 at 05:55:17PM +0800, Lin Huang wrote:
> [...]
>> + ret = clk_prepare_enable(data->clk);
>> + if (ret) {
>> + dev_err(&pdev->dev, "failed to enable clk: %d\n", ret);
>> + clk_disable_unprepare(data->clk);
>> + return ret;
>> + }
> This is going to give you a large WARN. clk_prepare_enable() already
> leaves the clock in a proper state when it fails (i.e. it calls
> clk_unprepare() if the clk_enable() part failed), so calling
> clk_disable_unprepare() upon failure is going to unbalance the
> reference counts.
Thanks for reminding, i will fix it next version.
>
> Thierry

--
Lin Huang