crypto: atmel-sha - create function to get an Atmel SHA device
This is a transitional patch: it creates the atmel_sha_find_dev() function,
which will be used in further patches to share the source code responsible
for finding a Atmel SHA device.
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c
index 97e3479..33a36e6 100644
--- a/drivers/crypto/atmel-sha.c
+++ b/drivers/crypto/atmel-sha.c
@@ -260,11 +260,8 @@
}
}
-static int atmel_sha_init(struct ahash_request *req)
+static struct atmel_sha_dev *atmel_sha_find_dev(struct atmel_sha_ctx *tctx)
{
- struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
- struct atmel_sha_ctx *tctx = crypto_ahash_ctx(tfm);
- struct atmel_sha_reqctx *ctx = ahash_request_ctx(req);
struct atmel_sha_dev *dd = NULL;
struct atmel_sha_dev *tmp;
@@ -281,6 +278,16 @@
spin_unlock_bh(&atmel_sha.lock);
+ return dd;
+}
+
+static int atmel_sha_init(struct ahash_request *req)
+{
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+ struct atmel_sha_ctx *tctx = crypto_ahash_ctx(tfm);
+ struct atmel_sha_reqctx *ctx = ahash_request_ctx(req);
+ struct atmel_sha_dev *dd = atmel_sha_find_dev(tctx);
+
ctx->dd = dd;
ctx->flags = 0;