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 <clabbe.montjoie@xxxxxxxxx>
---
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
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