linux-kernel - Re: [PATCH v5 08/13] iio: inkern: Use max_array() to get the maximum value from an array

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Message-ID: <20230617184542.36865dc2@jic23-huawei>
Date:   Sat, 17 Jun 2023 18:45:42 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Herve Codina <herve.codina@...tlin.com>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v5 08/13] iio: inkern: Use max_array() to get the
 maximum value from an array

On Thu, 15 Jun 2023 17:26:26 +0200
Herve Codina <herve.codina@...tlin.com> wrote:

> Use max_array() to get the maximum value from an array instead of a
> custom local loop.
> 
> Signed-off-by: Herve Codina <herve.codina@...tlin.com>
> Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>

Acked-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>

> ---
>  drivers/iio/inkern.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
> index 71d0424383b6..8bfd91f74101 100644
> --- a/drivers/iio/inkern.c
> +++ b/drivers/iio/inkern.c
> @@ -5,6 +5,7 @@
>   */
>  #include <linux/err.h>
>  #include <linux/export.h>
> +#include <linux/minmax.h>
>  #include <linux/mutex.h>
>  #include <linux/property.h>
>  #include <linux/slab.h>
> @@ -875,11 +876,7 @@ static int iio_channel_read_max(struct iio_channel *chan,
>  			return -EINVAL;
>  		switch (*type) {
>  		case IIO_VAL_INT:
> -			*val = vals[--length];
> -			while (length) {
> -				if (vals[--length] > *val)
> -					*val = vals[length];
> -			}
> +			*val = max_array(vals, length);
>  			break;
>  		default:
>  			/* FIXME: learn about max for other iio values */