linux-kernel - Re: [PATCH] nfsd: remove unnecessary NULL check

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Message-ID: <afb785edd639f9645b4b3fcf098bdcf1e31d82b8.camel@kernel.org>
Date:   Mon, 04 Dec 2023 08:10:07 -0500
From:   Jeff Layton <jlayton@...nel.org>
To:     Dan Carpenter <dan.carpenter@...aro.org>,
        Chuck Lever <chuck.lever@...cle.com>
Cc:     Neil Brown <neilb@...e.de>, Olga Kornievskaia <kolga@...app.com>,
        Dai Ngo <Dai.Ngo@...cle.com>, Tom Talpey <tom@...pey.com>,
        linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] nfsd: remove unnecessary NULL check

On Mon, 2023-12-04 at 15:30 +0300, Dan Carpenter wrote:
> We check "state" for NULL on the previous line so it can't be NULL here.
> No need to check again.
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Closes: https://lore.kernel.org/r/202312031425.LffZTarR-lkp@intel.com/
> Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
> ---
>  fs/nfsd/nfs4state.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
> index 40415929e2ae..fb551a3db1dc 100644
> --- a/fs/nfsd/nfs4state.c
> +++ b/fs/nfsd/nfs4state.c
> @@ -6639,7 +6639,7 @@ __be32 manage_cpntf_state(struct nfsd_net *nn, stateid_t *st,
>  	spin_unlock(&nn->s2s_cp_lock);
>  	if (!state)
>  		return nfserr_bad_stateid;
> -	if (!clp && state)
> +	if (!clp)
>  		*cps = state;
>  	return 0;
>  }

Reviewed-by: Jeff Layton <jlayton@...nel.org>