From: LABBE Corentin Subject: [PATCH v2 8/8] crypto: caam: replace __sg_count with sg_nents_len_chained Date: Fri, 18 Sep 2015 14:57:16 +0200 Message-ID: <1442581036-23789-9-git-send-email-clabbe.montjoie@gmail.com> References: <1442581036-23789-1-git-send-email-clabbe.montjoie@gmail.com> Cc: linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org To: herbert@gondor.apana.org.au, davem@davemloft.net, clabbe.montjoie@gmail.com, cristian.stoica@freescale.com, fabio.estevam@freescale.com, horia.geanta@freescale.com, steve.cornelius@freescale.com, vicki.milhoan@freescale.com, yanjiang.jin@windriver.com Return-path: In-Reply-To: <1442581036-23789-1-git-send-email-clabbe.montjoie@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org The caam driver use a modified version of sg_nents_for_len called __sg_count. This function is now availlable in lib/scatterlist.c Replace __sg_count by sg_nents_len_chained Signed-off-by: LABBE Corentin --- drivers/crypto/caam/caamhash.c | 14 ++++++++------ drivers/crypto/caam/sg_sw_sec4.h | 20 +------------------- 2 files changed, 9 insertions(+), 25 deletions(-) diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c index 94433b9..116af3e 100644 --- a/drivers/crypto/caam/caamhash.c +++ b/drivers/crypto/caam/caamhash.c @@ -797,8 +797,9 @@ static int ahash_update_ctx(struct ahash_request *req) to_hash = in_len - *next_buflen; if (to_hash) { - src_nents = __sg_count(req->src, req->nbytes - (*next_buflen), - &chained); + src_nents = sg_nents_len_chained(req->src, + req->nbytes - (*next_buflen), + &chained); sec4_sg_src_index = 1 + (*buflen ? 1 : 0); sec4_sg_bytes = (sec4_sg_src_index + src_nents) * sizeof(struct sec4_sg_entry); @@ -1000,7 +1001,7 @@ static int ahash_finup_ctx(struct ahash_request *req) int ret = 0; int sh_len; - src_nents = __sg_count(req->src, req->nbytes, &chained); + src_nents = sg_nents_len_chained(req->src, req->nbytes, &chained); sec4_sg_src_index = 1 + (buflen ? 1 : 0); sec4_sg_bytes = (sec4_sg_src_index + src_nents) * sizeof(struct sec4_sg_entry); @@ -1236,8 +1237,9 @@ static int ahash_update_no_ctx(struct ahash_request *req) to_hash = in_len - *next_buflen; if (to_hash) { - src_nents = __sg_count(req->src, req->nbytes - (*next_buflen), - &chained); + src_nents = sg_nents_len_chained(req->src, + req->nbytes - (*next_buflen), + &chained); sec4_sg_bytes = (1 + src_nents) * sizeof(struct sec4_sg_entry); @@ -1347,7 +1349,7 @@ static int ahash_finup_no_ctx(struct ahash_request *req) int sh_len; int ret = 0; - src_nents = __sg_count(req->src, req->nbytes, &chained); + src_nents = sg_nents_len_chained(req->src, req->nbytes, &chained); sec4_sg_src_index = 2; sec4_sg_bytes = (sec4_sg_src_index + src_nents) * sizeof(struct sec4_sg_entry); diff --git a/drivers/crypto/caam/sg_sw_sec4.h b/drivers/crypto/caam/sg_sw_sec4.h index 18cd6d1..0575a8e 100644 --- a/drivers/crypto/caam/sg_sw_sec4.h +++ b/drivers/crypto/caam/sg_sw_sec4.h @@ -69,29 +69,11 @@ static inline struct sec4_sg_entry *sg_to_sec4_sg_len( return sec4_sg_ptr - 1; } -/* count number of elements in scatterlist */ -static inline int __sg_count(struct scatterlist *sg_list, int nbytes, - bool *chained) -{ - struct scatterlist *sg = sg_list; - int sg_nents = 0; - - while (nbytes > 0) { - sg_nents++; - nbytes -= sg->length; - if (!sg_is_last(sg) && (sg + 1)->length == 0) - *chained = true; - sg = sg_next(sg); - } - - return sg_nents; -} - /* derive number of elements in scatterlist, but return 0 for 1 */ static inline int sg_count(struct scatterlist *sg_list, int nbytes, bool *chained) { - int sg_nents = __sg_count(sg_list, nbytes, chained); + int sg_nents = sg_nents_len_chained(sg_list, nbytes, chained); if (likely(sg_nents == 1)) return 0; -- 2.4.6