linux-kernel - Re: [PATCH v2 1/3] iio: temperature: ltc2983: Don't hard code defined constants in messages

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Message-ID: <fdb3056dcaf9dd113049adebbc3fcd74de2b3028.camel@perches.com>
Date:   Mon, 07 Feb 2022 08:37:55 -0800
From:   Joe Perches <joe@...ches.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Nuno Sá <nuno.sa@...log.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>
Subject: Re: [PATCH v2 1/3] iio: temperature: ltc2983: Don't hard code
 defined constants in messages

On Mon, 2022-02-07 at 12:48 +0200, Andy Shevchenko wrote:
> In a couple of messages the constants, which have their definitions,
> are hard coded into the message text. Unhardcode them.

Found by inspection or tool?

> diff --git a/drivers/iio/temperature/ltc2983.c b/drivers/iio/temperature/ltc2983.c
[]
> @@ -409,8 +409,8 @@ static struct ltc2983_custom_sensor *__ltc2983_custom_sensor_new(
>  	new_custom->size = n_entries * n_size;
>  	/* check Steinhart size */
>  	if (is_steinhart && new_custom->size != LTC2983_CUSTOM_STEINHART_SIZE) {
> -		dev_err(dev, "Steinhart sensors size(%zu) must be 24",
> -							new_custom->size);
> +		dev_err(dev, "Steinhart sensors size(%zu) must be %d", new_custom->size,
> +			LTC2983_CUSTOM_STEINHART_SIZE);

probably better using "%u" and not "%d"

and better with a \n termination too.

>  		return ERR_PTR(-EINVAL);
>  	}
>  	/* Check space on the table. */
> @@ -1299,8 +1299,8 @@ static int ltc2983_parse_dt(struct ltc2983_data *st)
>  		if (sensor.chan < LTC2983_MIN_CHANNELS_NR ||
>  		    sensor.chan > LTC2983_MAX_CHANNELS_NR) {
>  			ret = -EINVAL;
> -			dev_err(dev,
> -				"chan:%d must be from 1 to 20\n", sensor.chan);
> +			dev_err(dev, "chan:%d must be from %d to %d\n", sensor.chan,
> +				LTC2983_MIN_CHANNELS_NR, LTC2983_MAX_CHANNELS_NR);
>  			goto put_child;
>  		} else if (channel_avail_mask & BIT(sensor.chan)) {
>  			ret = -EINVAL;