crypto: omap-sham - stop setting alignmask for ahashes

The crypto API's support for alignmasks for ahash algorithms is nearly
useless, as its only effect is to cause the API to align the key and
result buffers.  The drivers that happen to be specifying an alignmask
for ahash rarely actually need it.  When they do, it's easily fixable,
especially considering that these buffers cannot be used for DMA.

In preparation for removing alignmask support from ahash, this patch
makes the omap-sham driver no longer use it.  This driver did actually
rely on it, but only for storing to the result buffer using __u32 stores
in omap_sham_copy_ready_hash().  This patch makes
omap_sham_copy_ready_hash() use put_unaligned() instead.  (It really
should use a specific endianness, but that's an existing bug.)

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index 496602f7caa59e1db4c384e585e0cc7b1e58daba..5bcd9ab0f72ad5d06fa845d2bcb4567a59d4985d 100644 (file)
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -356,10 +356,10 @@ static void omap_sham_copy_ready_hash(struct ahash_request *req)
 
        if (big_endian)
                for (i = 0; i < d; i++)
-                       hash[i] = be32_to_cpup((__be32 *)in + i);
+                       put_unaligned(be32_to_cpup((__be32 *)in + i), &hash[i]);
        else
                for (i = 0; i < d; i++)
-                       hash[i] = le32_to_cpup((__le32 *)in + i);
+                       put_unaligned(le32_to_cpup((__le32 *)in + i), &hash[i]);
 }
 
 static void omap_sham_write_ctrl_omap2(struct omap_sham_dev *dd, size_t length,
@@ -1435,7 +1435,6 @@ static struct ahash_engine_alg algs_sha1_md5[] = {
                                                CRYPTO_ALG_NEED_FALLBACK,
                .cra_blocksize          = SHA1_BLOCK_SIZE,
                .cra_ctxsize            = sizeof(struct omap_sham_ctx),
-               .cra_alignmask          = OMAP_ALIGN_MASK,
                .cra_module             = THIS_MODULE,
                .cra_init               = omap_sham_cra_init,
                .cra_exit               = omap_sham_cra_exit,
@@ -1458,7 +1457,6 @@ static struct ahash_engine_alg algs_sha1_md5[] = {
                                                CRYPTO_ALG_NEED_FALLBACK,
                .cra_blocksize          = SHA1_BLOCK_SIZE,
                .cra_ctxsize            = sizeof(struct omap_sham_ctx),
-               .cra_alignmask          = OMAP_ALIGN_MASK,
                .cra_module             = THIS_MODULE,
                .cra_init               = omap_sham_cra_init,
                .cra_exit               = omap_sham_cra_exit,
@@ -1483,7 +1481,6 @@ static struct ahash_engine_alg algs_sha1_md5[] = {
                .cra_blocksize          = SHA1_BLOCK_SIZE,
                .cra_ctxsize            = sizeof(struct omap_sham_ctx) +
                                        sizeof(struct omap_sham_hmac_ctx),
-               .cra_alignmask          = OMAP_ALIGN_MASK,
                .cra_module             = THIS_MODULE,
                .cra_init               = omap_sham_cra_sha1_init,
                .cra_exit               = omap_sham_cra_exit,
@@ -1508,7 +1505,6 @@ static struct ahash_engine_alg algs_sha1_md5[] = {
                .cra_blocksize          = SHA1_BLOCK_SIZE,
                .cra_ctxsize            = sizeof(struct omap_sham_ctx) +
                                        sizeof(struct omap_sham_hmac_ctx),
-               .cra_alignmask          = OMAP_ALIGN_MASK,
                .cra_module             = THIS_MODULE,
                .cra_init               = omap_sham_cra_md5_init,
                .cra_exit               = omap_sham_cra_exit,
@@ -1535,7 +1531,6 @@ static struct ahash_engine_alg algs_sha224_sha256[] = {
                                                CRYPTO_ALG_NEED_FALLBACK,
                .cra_blocksize          = SHA224_BLOCK_SIZE,
                .cra_ctxsize            = sizeof(struct omap_sham_ctx),
-               .cra_alignmask          = OMAP_ALIGN_MASK,
                .cra_module             = THIS_MODULE,
                .cra_init               = omap_sham_cra_init,
                .cra_exit               = omap_sham_cra_exit,
@@ -1558,7 +1553,6 @@ static struct ahash_engine_alg algs_sha224_sha256[] = {
                                                CRYPTO_ALG_NEED_FALLBACK,
                .cra_blocksize          = SHA256_BLOCK_SIZE,
                .cra_ctxsize            = sizeof(struct omap_sham_ctx),
-               .cra_alignmask          = OMAP_ALIGN_MASK,
                .cra_module             = THIS_MODULE,
                .cra_init               = omap_sham_cra_init,
                .cra_exit               = omap_sham_cra_exit,
@@ -1583,7 +1577,6 @@ static struct ahash_engine_alg algs_sha224_sha256[] = {
                .cra_blocksize          = SHA224_BLOCK_SIZE,
                .cra_ctxsize            = sizeof(struct omap_sham_ctx) +
                                        sizeof(struct omap_sham_hmac_ctx),
-               .cra_alignmask          = OMAP_ALIGN_MASK,
                .cra_module             = THIS_MODULE,
                .cra_init               = omap_sham_cra_sha224_init,
                .cra_exit               = omap_sham_cra_exit,
@@ -1608,7 +1601,6 @@ static struct ahash_engine_alg algs_sha224_sha256[] = {
                .cra_blocksize          = SHA256_BLOCK_SIZE,
                .cra_ctxsize            = sizeof(struct omap_sham_ctx) +
                                        sizeof(struct omap_sham_hmac_ctx),
-               .cra_alignmask          = OMAP_ALIGN_MASK,
                .cra_module             = THIS_MODULE,
                .cra_init               = omap_sham_cra_sha256_init,
                .cra_exit               = omap_sham_cra_exit,
@@ -1634,7 +1626,6 @@ static struct ahash_engine_alg algs_sha384_sha512[] = {
                                                CRYPTO_ALG_NEED_FALLBACK,
                .cra_blocksize          = SHA384_BLOCK_SIZE,
                .cra_ctxsize            = sizeof(struct omap_sham_ctx),
-               .cra_alignmask          = OMAP_ALIGN_MASK,
                .cra_module             = THIS_MODULE,
                .cra_init               = omap_sham_cra_init,
                .cra_exit               = omap_sham_cra_exit,
@@ -1657,7 +1648,6 @@ static struct ahash_engine_alg algs_sha384_sha512[] = {
                                                CRYPTO_ALG_NEED_FALLBACK,
                .cra_blocksize          = SHA512_BLOCK_SIZE,
                .cra_ctxsize            = sizeof(struct omap_sham_ctx),
-               .cra_alignmask          = OMAP_ALIGN_MASK,
                .cra_module             = THIS_MODULE,
                .cra_init               = omap_sham_cra_init,
                .cra_exit               = omap_sham_cra_exit,
@@ -1682,7 +1672,6 @@ static struct ahash_engine_alg algs_sha384_sha512[] = {
                .cra_blocksize          = SHA384_BLOCK_SIZE,
                .cra_ctxsize            = sizeof(struct omap_sham_ctx) +
                                        sizeof(struct omap_sham_hmac_ctx),
-               .cra_alignmask          = OMAP_ALIGN_MASK,
                .cra_module             = THIS_MODULE,
                .cra_init               = omap_sham_cra_sha384_init,
                .cra_exit               = omap_sham_cra_exit,
@@ -1707,7 +1696,6 @@ static struct ahash_engine_alg algs_sha384_sha512[] = {
                .cra_blocksize          = SHA512_BLOCK_SIZE,
                .cra_ctxsize            = sizeof(struct omap_sham_ctx) +
                                        sizeof(struct omap_sham_hmac_ctx),
-               .cra_alignmask          = OMAP_ALIGN_MASK,
                .cra_module             = THIS_MODULE,
                .cra_init               = omap_sham_cra_sha512_init,
                .cra_exit               = omap_sham_cra_exit,