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From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
To: Xiang wangx <wangxiang@cdjrlc.com>
Cc: linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] i2c: s3c2410: Delete unneeded variable: "ret"
Date: Thu, 16 Sep 2021 12:52:36 +0200	[thread overview]
Message-ID: <0d1a0027-e74d-9f07-3b96-372b5ca14ae3@canonical.com> (raw)
In-Reply-To: <20210916103718.29956-1-wangxiang@cdjrlc.com>

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@cdjrlc.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

WARNING: multiple messages have this Message-ID (diff)
From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
To: Xiang wangx <wangxiang@cdjrlc.com>
Cc: linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] i2c: s3c2410: Delete unneeded variable: "ret"
Date: Thu, 16 Sep 2021 12:52:36 +0200	[thread overview]
Message-ID: <0d1a0027-e74d-9f07-3b96-372b5ca14ae3@canonical.com> (raw)
In-Reply-To: <20210916103718.29956-1-wangxiang@cdjrlc.com>

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@cdjrlc.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

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  reply	other threads:[~2021-09-16 10:52 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-16 10:37 [PATCH] i2c: s3c2410: Delete unneeded variable: "ret" Xiang wangx
2021-09-16 10:37 ` Xiang wangx
2021-09-16 10:52 ` Krzysztof Kozlowski [this message]
2021-09-16 10:52   ` Krzysztof Kozlowski

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