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[v2,1/8] crypto: bfin: replace sg_count by sg_nents

Message ID 1442581036-23789-2-git-send-email-clabbe.montjoie@gmail.com (mailing list archive)
State Accepted
Delegated to: Herbert Xu
Headers show

Commit Message

Corentin Labbe Sept. 18, 2015, 12:57 p.m. UTC 
The sg_count function in bfin_crc.c is the same function as sg_nents.
Remove the duplicate code and use sg_nents() instead.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
---
 drivers/crypto/bfin_crc.c | 25 +++----------------------
 1 file changed, 3 insertions(+), 22 deletions(-)
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Patch

diff --git a/drivers/crypto/bfin_crc.c b/drivers/crypto/bfin_crc.c
index 2f0b333..95b7396 100644
--- a/drivers/crypto/bfin_crc.c
+++ b/drivers/crypto/bfin_crc.c
@@ -96,26 +96,6 @@  struct bfin_crypto_crc_ctx {
 	u32			key;
 };
 
-
-/*
- * derive number of elements in scatterlist
- */
-static int sg_count(struct scatterlist *sg_list)
-{
-	struct scatterlist *sg = sg_list;
-	int sg_nents = 1;
-
-	if (sg_list == NULL)
-		return 0;
-
-	while (!sg_is_last(sg)) {
-		sg_nents++;
-		sg = sg_next(sg);
-	}
-
-	return sg_nents;
-}
-
 /*
  * get element in scatter list by given index
  */
@@ -160,7 +140,7 @@  static int bfin_crypto_crc_init(struct ahash_request *req)
 	}
 	spin_unlock_bh(&crc_list.lock);
 
-	if (sg_count(req->src) > CRC_MAX_DMA_DESC) {
+	if (sg_nents(req->src) > CRC_MAX_DMA_DESC) {
 		dev_dbg(ctx->crc->dev, "init: requested sg list is too big > %d\n",
 			CRC_MAX_DMA_DESC);
 		return -EINVAL;
@@ -376,7 +356,8 @@  static int bfin_crypto_crc_handle_queue(struct bfin_crypto_crc *crc,
 			ctx->sg = req->src;
 
 		/* Chop crc buffer size to multiple of 32 bit */
-		nsg = ctx->sg_nents = sg_count(ctx->sg);
+		nsg = sg_nents(ctx->sg);
+		ctx->sg_nents = nsg;
 		ctx->sg_buflen = ctx->buflast_len + req->nbytes;
 		ctx->bufnext_len = ctx->sg_buflen % 4;
 		ctx->sg_buflen &= ~0x3;