From d39caf81248703164dee256611dc801102653830 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Sun, 22 Oct 2023 01:10:37 -0700 Subject: [PATCH] crypto: mxs-dcp - 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 mxs-dcp driver no longer use it. This driver didn't actually rely on it; it only writes to the result buffer in dcp_sha_req_to_buf(), using a bytewise copy. And this driver only supports unkeyed hash algorithms, so the key buffer need not be considered. Signed-off-by: Eric Biggers Signed-off-by: Herbert Xu --- drivers/crypto/mxs-dcp.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/crypto/mxs-dcp.c b/drivers/crypto/mxs-dcp.c index d41efddbc772..2b3ebe0db3a6 100644 --- a/drivers/crypto/mxs-dcp.c +++ b/drivers/crypto/mxs-dcp.c @@ -908,7 +908,6 @@ static struct ahash_alg dcp_sha1_alg = { .cra_name = "sha1", .cra_driver_name = "sha1-dcp", .cra_priority = 400, - .cra_alignmask = 63, .cra_flags = CRYPTO_ALG_ASYNC, .cra_blocksize = SHA1_BLOCK_SIZE, .cra_ctxsize = sizeof(struct dcp_async_ctx), @@ -935,7 +934,6 @@ static struct ahash_alg dcp_sha256_alg = { .cra_name = "sha256", .cra_driver_name = "sha256-dcp", .cra_priority = 400, - .cra_alignmask = 63, .cra_flags = CRYPTO_ALG_ASYNC, .cra_blocksize = SHA256_BLOCK_SIZE, .cra_ctxsize = sizeof(struct dcp_async_ctx),