linux-kernel - Re: [PATCH 09/11] soundwire: intel: add dynamic debug trace for clock-stop invalid configs

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Message-ID: <20200826094817.GC2639@vkoul-mobl>
Date:   Wed, 26 Aug 2020 15:18:17 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Bard Liao <yung-chuan.liao@...ux.intel.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        tiwai@...e.de, broonie@...nel.org, gregkh@...uxfoundation.org,
        jank@...ence.com, srinivas.kandagatla@...aro.org,
        rander.wang@...ux.intel.com, ranjani.sridharan@...ux.intel.com,
        hui.wang@...onical.com, pierre-louis.bossart@...ux.intel.com,
        sanyog.r.kale@...el.com, mengdong.lin@...el.com,
        bard.liao@...el.com
Subject: Re: [PATCH 09/11] soundwire: intel: add dynamic debug trace for
 clock-stop invalid configs

On 18-08-20, 10:41, Bard Liao wrote:
> From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
> 
> Detect cases where the clock is assumed to be stopped but the IP is
> not in the relevant state, and add a dynamic debug trace.

you meant a debug print..and it looks like error print below (also in title).

> 
> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
> Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
> ---
>  drivers/soundwire/intel.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
> index 7c63581270fd..b82d02af3c4f 100644
> --- a/drivers/soundwire/intel.c
> +++ b/drivers/soundwire/intel.c
> @@ -1964,6 +1964,11 @@ static int intel_resume_runtime(struct device *dev)
>  			}
>  		}
>  	} else if (!clock_stop_quirks) {
> +
> +		clock_stop0 = sdw_cdns_is_clock_stop(&sdw->cdns);
> +		if (!clock_stop0)
> +			dev_err(dev, "%s invalid configuration, clock was not stopped", __func__);
> +
>  		ret = intel_init(sdw);
>  		if (ret) {
>  			dev_err(dev, "%s failed: %d", __func__, ret);
> -- 
> 2.17.1

-- 
~Vinod