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crypto: sahara - replace sahara_sg_length with sg_nents_for_len 

The sahara_sg_length function of the sahara driver is the same
as sg_nents_for_len from lib/scatterlist.c

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
LABBE Corentin 2015-09-18 14:57:11 +02:00 committed by Herbert Xu
parent 76804eb846
commit d23afa1abc
1 changed files with 3 additions and 27 deletions
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30
drivers/crypto/sahara.c
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@ -274,30 +274,6 @@ static u32 sahara_aes_data_link_hdr(struct sahara_dev *dev)
SAHARA_HDR_CHA_SKHA | SAHARA_HDR_PARITY_BIT;
}
static int sahara_sg_length(struct scatterlist *sg,
unsigned int total)
{
int sg_nb;
unsigned int len;
struct scatterlist *sg_list;
sg_nb = 0;
sg_list = sg;
while (total) {
len = min(sg_list->length, total);
sg_nb++;
total -= len;
sg_list = sg_next(sg_list);
if (!sg_list)
total = 0;
}
return sg_nb;
}
static char *sahara_err_src[16] = {
"No error",
"Header error",
@ -502,8 +478,8 @@ static int sahara_hw_descriptor_create(struct sahara_dev *dev)
idx++;
}
dev->nb_in_sg = sahara_sg_length(dev->in_sg, dev->total);
dev->nb_out_sg = sahara_sg_length(dev->out_sg, dev->total);
dev->nb_in_sg = sg_nents_for_len(dev->in_sg, dev->total);
dev->nb_out_sg = sg_nents_for_len(dev->out_sg, dev->total);
if ((dev->nb_in_sg + dev->nb_out_sg) > SAHARA_MAX_HW_LINK) {
dev_err(dev->device, "not enough hw links (%d)\n",
dev->nb_in_sg + dev->nb_out_sg);
@ -818,7 +794,7 @@ static int sahara_sha_hw_links_create(struct sahara_dev *dev,
dev->in_sg = rctx->in_sg;
dev->nb_in_sg = sahara_sg_length(dev->in_sg, rctx->total);
dev->nb_in_sg = sg_nents_for_len(dev->in_sg, rctx->total);
if ((dev->nb_in_sg) > SAHARA_MAX_HW_LINK) {
dev_err(dev->device, "not enough hw links (%d)\n",
dev->nb_in_sg + dev->nb_out_sg);