linux-kernel - Re: [PATCH] i2c: s3c2410: Delete unneeded variable: "ret"

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Date:   Thu, 16 Sep 2021 12:52:36 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Xiang wangx <wangxiang@...rlc.com>
Cc:     linux-i2c@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c: s3c2410: Delete unneeded variable: "ret"

On 16/09/2021 12:37, Xiang wangx wrote:
> variable: "ret" defined but not used in function "i2c_s3c_irq_nextbyte"
> 
> Signed-off-by: Xiang wangx <wangxiang@...rlc.com>
> ---
>  drivers/i2c/busses/i2c-s3c2410.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
> index b49a1b170bb2..6df85b23156c 100644
> --- a/drivers/i2c/busses/i2c-s3c2410.c
> +++ b/drivers/i2c/busses/i2c-s3c2410.c
> @@ -385,7 +385,6 @@ static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
>  {
>  	unsigned long tmp;
>  	unsigned char byte;
> -	int ret = 0;
>  
>  	switch (i2c->state) {
>  
> @@ -548,7 +547,7 @@ static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
>  	tmp &= ~S3C2410_IICCON_IRQPEND;
>  	writel(tmp, i2c->regs + S3C2410_IICCON);
>   out:
> -	return ret;
> +	return 0;

Change is okay but I would go step further - made the function return
void(). None of the callers check for return so no functionality is lost.


Best regards,
Krzysztof