crypto: virtio - Drop superfluous ctx->tfm backpointer

struct virtio_crypto_[as]kcipher_ctx contains a backpointer to struct
crypto_[as]kcipher which is superfluous in two ways:

First, it's not used anywhere.  Second, the context is embedded into
struct crypto_tfm, so one could just use container_of() to get from the
context to crypto_tfm and from there to crypto_[as]kcipher.

Drop the superfluous backpointer.

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/virtio/virtio_crypto_akcipher_algs.c b/drivers/crypto/virtio/virtio_crypto_akcipher_algs.c
index 7fdf32c79909c42548b247bc4183c670941fc8fa..aa8255786d6cadfaed4fec9b8c514c54a69f1899 100644 (file)
--- a/drivers/crypto/virtio/virtio_crypto_akcipher_algs.c
+++ b/drivers/crypto/virtio/virtio_crypto_akcipher_algs.c
@@ -26,7 +26,6 @@ struct virtio_crypto_rsa_ctx {
 
 struct virtio_crypto_akcipher_ctx {
        struct virtio_crypto *vcrypto;
-       struct crypto_akcipher *tfm;
        bool session_valid;
        __u64 session_id;
        union {
@@ -447,10 +446,6 @@ static unsigned int virtio_crypto_rsa_max_size(struct crypto_akcipher *tfm)
 
 static int virtio_crypto_rsa_init_tfm(struct crypto_akcipher *tfm)
 {
-       struct virtio_crypto_akcipher_ctx *ctx = akcipher_tfm_ctx(tfm);
-
-       ctx->tfm = tfm;
-
        akcipher_set_reqsize(tfm,
                             sizeof(struct virtio_crypto_akcipher_request));
 

diff --git a/drivers/crypto/virtio/virtio_crypto_skcipher_algs.c b/drivers/crypto/virtio/virtio_crypto_skcipher_algs.c
index 23c41d87d835ff77ac062d41148aed37f064367d..495fc655a51cdf79b10dbf97677e4522a3b24949 100644 (file)
--- a/drivers/crypto/virtio/virtio_crypto_skcipher_algs.c
+++ b/drivers/crypto/virtio/virtio_crypto_skcipher_algs.c
@@ -17,7 +17,6 @@
 
 struct virtio_crypto_skcipher_ctx {
        struct virtio_crypto *vcrypto;
-       struct crypto_skcipher *tfm;
 
        struct virtio_crypto_sym_session_info enc_sess_info;
        struct virtio_crypto_sym_session_info dec_sess_info;
@@ -515,10 +514,7 @@ static int virtio_crypto_skcipher_decrypt(struct skcipher_request *req)
 
 static int virtio_crypto_skcipher_init(struct crypto_skcipher *tfm)
 {
-       struct virtio_crypto_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm);
-
        crypto_skcipher_set_reqsize(tfm, sizeof(struct virtio_crypto_sym_request));
-       ctx->tfm = tfm;
 
        return 0;
 }