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crypto: amcc - replace get_sg_count by sg_nents_for_len

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The get_sg_count function of amcc 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 14:57:10 +02:00 committed by Herbert Xu
parent 1f6d79d7e0
commit 76804eb846
1 changed files with 1 additions and 21 deletions
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22
drivers/crypto/amcc/crypto4xx_core.c
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@ -740,26 +740,6 @@ void crypto4xx_return_pd(struct crypto4xx_device *dev,
pd_uinfo->state = PD_ENTRY_FREE; pd_uinfo->state = PD_ENTRY_FREE;
} }
/*
* derive number of elements in scatterlist
* Shamlessly copy from talitos.c
*/
static int get_sg_count(struct scatterlist *sg_list, int nbytes)
{
struct scatterlist *sg = sg_list;
int sg_nents = 0;
while (nbytes) {
sg_nents++;
if (sg->length > nbytes)
break;
nbytes -= sg->length;
sg = sg_next(sg);
}
return sg_nents;
}
static u32 get_next_gd(u32 current) static u32 get_next_gd(u32 current)
{ {
if (current != PPC4XX_LAST_GD) if (current != PPC4XX_LAST_GD)
@ -800,7 +780,7 @@ u32 crypto4xx_build_pd(struct crypto_async_request *req,
u32 gd_idx = 0; u32 gd_idx = 0;
/* figure how many gd is needed */ /* figure how many gd is needed */
num_gd = get_sg_count(src, datalen); num_gd = sg_nents_for_len(src, datalen);
if (num_gd == 1) if (num_gd == 1)
num_gd = 0; num_gd = 0;