linux-kernel - Re: [PATCH v3 3/7] max8903: cleans up confusing relationship between dc

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Message-id: <57639832.6000201@samsung.com>
Date:	Fri, 17 Jun 2016 08:26:58 +0200
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Chris Lapa <chris@...a.com.au>, dwmw2@...radead.org,
	dbaryshkov@...il.com, sre@...nel.org, mark.rutland@....com,
	robh+dt@...nel.org
Cc:	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org
Subject: Re: [PATCH v3 3/7] max8903: cleans up confusing relationship between
 dc_valid, dok and dcm.

On 06/17/2016 07:00 AM, Chris Lapa wrote:
> From: Chris Lapa <chris@...a.com.au>
> 
> The max8903_charger.h file indicated that dcm and dok were not optional
> when dc_valid is set.
> 
> It makes sense to have dok as a compulsory pin when dc_valid is given.
> However dcm can be optionally wired to a fixed level especially when the
> circuit is configured for dc power exclusively.
> 
> The previous implementation already allowed for this somewhat, however no
> error was given if dok wasn't given whilst dc_valid was.
> 
> The new implementation enforces dok presence when dc_valid is given. Whilst
> allowing dcm to be optional.
> 
> Signed-off-by: Chris Lapa <chris@...a.com.au>
> ---
>  drivers/power/max8903_charger.c       | 23 ++++++++++-------------
>  include/linux/power/max8903_charger.h |  6 +++---
>  2 files changed, 13 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/power/max8903_charger.c b/drivers/power/max8903_charger.c
> index 0a5b0e1..dbd911c4 100644
> --- a/drivers/power/max8903_charger.c
> +++ b/drivers/power/max8903_charger.c
> @@ -211,27 +211,24 @@ static int max8903_probe(struct platform_device *pdev)
>  	}
>  
>  	if (pdata->dc_valid) {
> -		if (pdata->dok && gpio_is_valid(pdata->dok) &&
> -				pdata->dcm && gpio_is_valid(pdata->dcm)) {
> +		if (pdata->dok && gpio_is_valid(pdata->dok)) {
>  			gpio = pdata->dok; /* PULL_UPed Interrupt */
>  			ta_in = gpio_get_value(gpio) ? 0 : 1;
> +		} else {
> +			dev_err(dev, "When DC is wired, DOK should"
> +					" be wired as well.\n");

Just found one nit. Don't split the strings.
        dev_err(dev,
                "When DC is wired, DOK should be wired as well.\n");

Best regards,
Krzysztof