linux-kernel - Re: [RFC PATCH 09/40] soundwire: cadence_master: fix usage of CONFIG

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Message-ID: <20190802120319.GL12733@vkoul-mobl.Dlink>
Date:   Fri, 2 Aug 2019 17:33:19 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...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,
        slawomir.blauciak@...el.com, Sanyog Kale <sanyog.r.kale@...el.com>
Subject: Re: [RFC PATCH 09/40] soundwire: cadence_master: fix usage of
 CONFIG_UPDATE

On 25-07-19, 18:40, Pierre-Louis Bossart wrote:

>  int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns)
>  {
> -	int ret;
> -
>  	_cdns_enable_interrupt(cdns);
> -	ret = cdns_clear_bit(cdns, CDNS_MCP_CONFIG_UPDATE,
> -			     CDNS_MCP_CONFIG_UPDATE_BIT);
> -	if (ret < 0)
> -		dev_err(cdns->dev, "Config update timedout\n");

I was expecting cdns_update_config() to be invoked here??

>  
> -	return ret;
> +	return 0;

It would be better if we return a value here a not success always

> @@ -943,7 +953,10 @@ int sdw_cdns_init(struct sdw_cdns *cdns)
>  
>  	cdns_writel(cdns, CDNS_MCP_CONFIG, val);
>  
> -	return 0;
> +	/* commit changes */
> +	ret = cdns_update_config(cdns);
> +
> +	return ret;

return cdns_update_config()

-- 
~Vinod