linux-kernel - Re: [PATCH] mtd: spi-nor: cqspi: remove redundant dead code on error return check

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Message-ID: <185694c8-16da-6ec7-6c27-2101ce21dc21@gmail.com>
Date:   Tue, 31 Jan 2017 20:30:47 +0100
From:   Marek Vasut <marek.vasut@...il.com>
To:     Colin King <colin.king@...onical.com>,
        Cyrille Pitchen <cyrille.pitchen@...el.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Richard Weinberger <richard@....at>,
        linux-mtd@...ts.infradead.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mtd: spi-nor: cqspi: remove redundant dead code on error
 return check

On 01/31/2017 04:53 PM, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> Checking for ret < 0 is redundant because a previous check on ret
> being non-zero already handles the ret < 0 case. Remove the redundant
> code. Found by CoverityScan, CID#1398863, CID#1398864
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Acked-by: Marek Vasut <marek.vasut@...il.com>

Thanks

> ---
>  drivers/mtd/spi-nor/cadence-quadspi.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mtd/spi-nor/cadence-quadspi.c b/drivers/mtd/spi-nor/cadence-quadspi.c
> index 3fb7be8..9f8102d 100644
> --- a/drivers/mtd/spi-nor/cadence-quadspi.c
> +++ b/drivers/mtd/spi-nor/cadence-quadspi.c
> @@ -893,7 +893,7 @@ static ssize_t cqspi_write(struct spi_nor *nor, loff_t to,
>  	if (ret)
>  		return ret;
>  
> -	return (ret < 0) ? ret : len;
> +	return len;
>  }
>  
>  static ssize_t cqspi_read(struct spi_nor *nor, loff_t from,
> @@ -913,7 +913,7 @@ static ssize_t cqspi_read(struct spi_nor *nor, loff_t from,
>  	if (ret)
>  		return ret;
>  
> -	return (ret < 0) ? ret : len;
> +	return len;
>  }
>  
>  static int cqspi_erase(struct spi_nor *nor, loff_t offs)
> 


-- 
Best regards,
Marek Vasut