linux-kernel - Re: [PATCH] aio: remove redundant assignment to variable ret

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Message-ID: <x49h8699vfb.fsf@segfault.boston.devel.redhat.com>
Date:   Thu, 22 Aug 2019 09:33:28 -0400
From:   Jeff Moyer <jmoyer@...hat.com>
To:     Colin King <colin.king@...onical.com>
Cc:     Benjamin LaHaise <bcrl@...ck.org>,
        Alexander Viro <viro@...iv.linux.org.uk>, linux-aio@...ck.org,
        linux-fsdevel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] aio: remove redundant assignment to variable ret

Colin King <colin.king@...onical.com> writes:

> From: Colin Ian King <colin.king@...onical.com>
>
> The variable ret is being set to -EINVAL however this is never read
> and later it is being reassigned to a new value. The assignment is
> redundant and hence can be removed.
>
> Addresses-Coverity: ("Unused Value")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  fs/aio.c | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/fs/aio.c b/fs/aio.c
> index f9f441b59966..3e290dfac10a 100644
> --- a/fs/aio.c
> +++ b/fs/aio.c
> @@ -1528,7 +1528,6 @@ static int aio_read(struct kiocb *req, const struct iocb *iocb,
>  	file = req->ki_filp;
>  	if (unlikely(!(file->f_mode & FMODE_READ)))
>  		return -EBADF;
> -	ret = -EINVAL;
>  	if (unlikely(!file->f_op->read_iter))
>  		return -EINVAL;

Acked-by: Jeff Moyer <jmoyer@...hat.com>