Re: [PATCH] sunrpc: remove redundant variables 'checksumlen','blocksize' and 'data'

From: J. Bruce Fields
Date: Wed Aug 01 2018 - 09:00:29 EST


Thanks, applying (assuming Chuck's got no objection to the svc_rdma
part).

--b.

On Wed, Aug 01, 2018 at 02:28:10PM +0800, YueHaibing wrote:
> Variables 'checksumlen','blocksize' and 'data' are being assigned,
> but are never used,hence they are redundant and can be removed.
>
> fix fllowing warning:
>
> net/sunrpc/auth_gss/gss_krb5_wrap.c:443:7: warning: variable âblocksizeâ set but not used [-Wunused-but-set-variable]
> net/sunrpc/auth_gss/gss_krb5_crypto.c:376:15: warning: variable âchecksumlenâ set but not used [-Wunused-but-set-variable]
> net/sunrpc/xprtrdma/svc_rdma.c:97:9: warning: variable âdataâ set but not used [-Wunused-but-set-variable]
>
> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
> ---
> net/sunrpc/auth_gss/gss_krb5_crypto.c | 2 --
> net/sunrpc/auth_gss/gss_krb5_wrap.c | 2 --
> net/sunrpc/xprtrdma/svc_rdma.c | 2 --
> 3 files changed, 6 deletions(-)
>
> diff --git a/net/sunrpc/auth_gss/gss_krb5_crypto.c b/net/sunrpc/auth_gss/gss_krb5_crypto.c
> index 8654494..84a16fd 100644
> --- a/net/sunrpc/auth_gss/gss_krb5_crypto.c
> +++ b/net/sunrpc/auth_gss/gss_krb5_crypto.c
> @@ -373,7 +373,6 @@ make_checksum_v2(struct krb5_ctx *kctx, char *header, int hdrlen,
> struct scatterlist sg[1];
> int err = -1;
> u8 *checksumdata;
> - unsigned int checksumlen;
>
> if (kctx->gk5e->keyed_cksum == 0) {
> dprintk("%s: expected keyed hash for %s\n",
> @@ -393,7 +392,6 @@ make_checksum_v2(struct krb5_ctx *kctx, char *header, int hdrlen,
> tfm = crypto_alloc_ahash(kctx->gk5e->cksum_name, 0, CRYPTO_ALG_ASYNC);
> if (IS_ERR(tfm))
> goto out_free_cksum;
> - checksumlen = crypto_ahash_digestsize(tfm);
>
> req = ahash_request_alloc(tfm, GFP_NOFS);
> if (!req)
> diff --git a/net/sunrpc/auth_gss/gss_krb5_wrap.c b/net/sunrpc/auth_gss/gss_krb5_wrap.c
> index a737c2d..9a1347f 100644
> --- a/net/sunrpc/auth_gss/gss_krb5_wrap.c
> +++ b/net/sunrpc/auth_gss/gss_krb5_wrap.c
> @@ -440,7 +440,6 @@ static u32
> gss_wrap_kerberos_v2(struct krb5_ctx *kctx, u32 offset,
> struct xdr_buf *buf, struct page **pages)
> {
> - int blocksize;
> u8 *ptr, *plainhdr;
> s32 now;
> u8 flags = 0x00;
> @@ -473,7 +472,6 @@ gss_wrap_kerberos_v2(struct krb5_ctx *kctx, u32 offset,
> *ptr++ = 0xff;
> be16ptr = (__be16 *)ptr;
>
> - blocksize = crypto_skcipher_blocksize(kctx->acceptor_enc);
> *be16ptr++ = 0;
> /* "inner" token header always uses 0 for RRC */
> *be16ptr++ = 0;
> diff --git a/net/sunrpc/xprtrdma/svc_rdma.c b/net/sunrpc/xprtrdma/svc_rdma.c
> index 357ba90..134bef6a 100644
> --- a/net/sunrpc/xprtrdma/svc_rdma.c
> +++ b/net/sunrpc/xprtrdma/svc_rdma.c
> @@ -94,7 +94,6 @@ static int read_reset_stat(struct ctl_table *table, int write,
> atomic_set(stat, 0);
> else {
> char str_buf[32];
> - char *data;
> int len = snprintf(str_buf, 32, "%d\n", atomic_read(stat));
> if (len >= 32)
> return -EFAULT;
> @@ -103,7 +102,6 @@ static int read_reset_stat(struct ctl_table *table, int write,
> *lenp = 0;
> return 0;
> }
> - data = &str_buf[*ppos];
> len -= *ppos;
> if (len > *lenp)
> len = *lenp;
> --
> 2.7.0
>