linux-kernel - Re: [PATCH 6/6] iio: magnetometer: mmc35240: Constify struct reg

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Message-ID: <20200531144848.4af9a574@archlinux>
Date:   Sun, 31 May 2020 14:48:48 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Rikard Falkeborn <rikard.falkeborn@...il.com>
Cc:     Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/6] iio: magnetometer: mmc35240: Constify struct
 reg_default

On Tue, 26 May 2020 23:02:23 +0200
Rikard Falkeborn <rikard.falkeborn@...il.com> wrote:

> mmc35240_reg_defaults 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
>    9759    3288     128   13175    3377 drivers/iio/magnetometer/mmc35240.o
> 
> After:
>    text    data     bss     dec     hex filename
>    9823    3224     128   13175    3377 drivers/iio/magnetometer/mmc35240.o
> 
> Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>
Applied to the togreg branch of iio.git and pushed out as testing for
the autobuilders to play with it.

Thanks,

Jonathan

> ---
>  drivers/iio/magnetometer/mmc35240.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/magnetometer/mmc35240.c b/drivers/iio/magnetometer/mmc35240.c
> index 1787d656d009..f27586716b5c 100644
> --- a/drivers/iio/magnetometer/mmc35240.c
> +++ b/drivers/iio/magnetometer/mmc35240.c
> @@ -459,7 +459,7 @@ static bool mmc35240_is_volatile_reg(struct device *dev, unsigned int reg)
>  	}
>  }
>  
> -static struct reg_default mmc35240_reg_defaults[] = {
> +static const struct reg_default mmc35240_reg_defaults[] = {
>  	{ MMC35240_REG_CTRL0,  0x00 },
>  	{ MMC35240_REG_CTRL1,  0x00 },
>  };