linux-kernel - Re: [PATCH] i2c: i2c-stm32f7: make structure stm32f7

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Date:   Sat, 16 Sep 2017 12:33:51 -0700
From:   Joe Perches <joe@...ches.com>
To:     Colin King <colin.king@...onical.com>,
        Wolfram Sang <wsa@...-dreams.de>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        linux-i2c@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c: i2c-stm32f7: make structure stm32f7_setup static

On Sat, 2017-09-16 at 12:33 +0100, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> The structure stm32f7_setup is local to the source and does not need
> to be in global scope, so make it static.
> 
> Cleans up sparse warning:
> symbol 'stm32f7_setup' was not declared. Should it be static?
[]
> diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c
[]
> @@ -265,7 +265,7 @@ static struct stm32f7_i2c_spec i2c_specs[] = {
>  	},
>  };
>  
> -struct stm32f7_i2c_setup stm32f7_setup = {
> +static struct stm32f7_i2c_setup stm32f7_setup = {

better to use static const

>  	.rise_time = STM32F7_I2C_RISE_TIME_DEFAULT,
>  	.fall_time = STM32F7_I2C_FALL_TIME_DEFAULT,
>  	.dnf = STM32F7_I2C_DNF_DEFAULT,