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| author | Eric Biggers <ebiggers@google.com> | 2023-10-22 01:10:34 -0700 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-10-27 18:04:28 +0800 |
| commit | 028a14470e0f937f037d2193d836148af8dc2d5c (patch) | |
| tree | 85ee1545c05c858e0e16f2c39ecffebc800ca2b6 /drivers/crypto/allwinner | |
| parent | 12e06ca3b98326e6320b74c18d344db294f2e5ae (diff) | |
| download | lwn-028a14470e0f937f037d2193d836148af8dc2d5c.tar.gz lwn-028a14470e0f937f037d2193d836148af8dc2d5c.zip | |
crypto: sun8i-ss - remove unnecessary 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 sun8i-ss driver no longer use it. This driver didn't actually
rely on it; it only writes to the result buffer in sun8i_ss_hash_run(),
simply using memcpy(). And sun8i_ss_hmac_setkey() does not assume any
alignment for the key buffer.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/allwinner')
| -rw-r--r-- | drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c index f14c60359d19..0dbc0220146c 100644 --- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c @@ -322,7 +322,6 @@ static struct sun8i_ss_alg_template ss_algs[] = { .cra_name = "md5", .cra_driver_name = "md5-sun8i-ss", .cra_priority = 300, - .cra_alignmask = 3, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, @@ -355,7 +354,6 @@ static struct sun8i_ss_alg_template ss_algs[] = { .cra_name = "sha1", .cra_driver_name = "sha1-sun8i-ss", .cra_priority = 300, - .cra_alignmask = 3, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, @@ -388,7 +386,6 @@ static struct sun8i_ss_alg_template ss_algs[] = { .cra_name = "sha224", .cra_driver_name = "sha224-sun8i-ss", .cra_priority = 300, - .cra_alignmask = 3, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, @@ -421,7 +418,6 @@ static struct sun8i_ss_alg_template ss_algs[] = { .cra_name = "sha256", .cra_driver_name = "sha256-sun8i-ss", .cra_priority = 300, - .cra_alignmask = 3, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, @@ -455,7 +451,6 @@ static struct sun8i_ss_alg_template ss_algs[] = { .cra_name = "hmac(sha1)", .cra_driver_name = "hmac-sha1-sun8i-ss", .cra_priority = 300, - .cra_alignmask = 3, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, |