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Subject[PATCH 13/17] crypto: talitos - move sg_count() helper into talitos.h
Date
move sg_count() helper into talitos.h as it will be needed by SEC1 specific functions

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

---
drivers/crypto/talitos.c | 20 --------------------
drivers/crypto/talitos.h | 21 +++++++++++++++++++++
2 files changed, 21 insertions(+), 20 deletions(-)

diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 9f75ec9..fc30196 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -459,26 +459,6 @@ static void talitos_unregister_rng(struct device *dev)
#define MD5_BLOCK_SIZE 64

/*
- * derive number of elements in scatterlist
- */
-static int sg_count(struct scatterlist *sg_list, int nbytes, bool *chained)
-{
- struct scatterlist *sg = sg_list;
- int sg_nents = 0;
-
- *chained = false;
- 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;
-}
-
-/*
* allocate and map the extended descriptor
*/
struct talitos_edesc *talitos_edesc_alloc(struct device *dev,
diff --git a/drivers/crypto/talitos.h b/drivers/crypto/talitos.h
index f95e4bc..a11ad53 100644
--- a/drivers/crypto/talitos.h
+++ b/drivers/crypto/talitos.h
@@ -155,6 +155,27 @@ extern void talitos_error(struct device *dev, u32 isr, u32 isr_lo);

extern int talitos_cra_init(struct crypto_tfm *tfm);

+/*
+ * derive 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;
+
+ *chained = false;
+ 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;
+}
+
/* .features flag */
#define TALITOS_FTR_SRC_LINK_TBL_LEN_INCLUDES_EXTENT 0x00000001
#define TALITOS_FTR_HW_AUTH_CHECK 0x00000002
--
2.1.0


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