linux-kernel - Re: [PATCH 3/6] iio: dac: ad5592r-base: Constify struct iio_chan_spec_ext

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Message-ID: <efde021ebc6da585f030adde11fbb31c5cdca3a1.camel@analog.com>
Date:   Wed, 27 May 2020 04:22:46 +0000
From:   "Ardelean, Alexandru" <alexandru.Ardelean@...log.com>
To:     "rikard.falkeborn@...il.com" <rikard.falkeborn@...il.com>,
        "jic23@...nel.org" <jic23@...nel.org>
CC:     "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        "Hennerich, Michael" <Michael.Hennerich@...log.com>,
        "knaack.h@....de" <knaack.h@....de>,
        "lars@...afoo.de" <lars@...afoo.de>,
        "pmeerw@...erw.net" <pmeerw@...erw.net>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/6] iio: dac: ad5592r-base: Constify struct
 iio_chan_spec_ext_info

On Tue, 2020-05-26 at 23:02 +0200, Rikard Falkeborn wrote:
> [External]
> 
> ad5592r_ext_info is not modified and can be made const to allow the
> compiler to put it in read-only memory.
> 
> Before:
>    text    data     bss     dec     hex filename
>   13293    2088     256   15637    3d15 drivers/iio/dac/ad5592r-base.o
> 
> After:
>    text    data     bss     dec     hex filename
>   13421    1960     256   15637    3d15 drivers/iio/dac/ad5592r-base.o
> 

Acked-by: Alexandru Ardelean <alexandru.ardelean@...log.com>

> Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>
> ---
>  drivers/iio/dac/ad5592r-base.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/dac/ad5592r-base.c b/drivers/iio/dac/ad5592r-
> base.c
> index 410e90e5f75f..7402f67a551d 100644
> --- a/drivers/iio/dac/ad5592r-base.c
> +++ b/drivers/iio/dac/ad5592r-base.c
> @@ -484,7 +484,7 @@ static ssize_t ad5592r_show_scale_available(struct
> iio_dev *iio_dev,
>  		st->scale_avail[1][0], st->scale_avail[1][1]);
>  }
>  
> -static struct iio_chan_spec_ext_info ad5592r_ext_info[] = {
> +static const struct iio_chan_spec_ext_info ad5592r_ext_info[] = {
>  	{
>  	 .name = "scale_available",
>  	 .read = ad5592r_show_scale_available,