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| author |   Horia Geantă <horia.geanta@nxp.com> | 2017-12-19 12:16:05 +0200 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2017-12-28 17:56:47 +1100 |
| commit | 662f70ede5975ce68a1c3524c9fa080c44a38b44 (patch) | |
| tree | 81216ca59ab4de12a02765c7069d4ef0ac10963e /drivers/crypto/caam/caamalg_qi.c | |
| parent | crypto: caam - constify key data (diff) | |
| download | linux-dev-662f70ede5975ce68a1c3524c9fa080c44a38b44.tar.xz linux-dev-662f70ede5975ce68a1c3524c9fa080c44a38b44.zip | |
crypto: caam - remove needless ablkcipher key copy
ablkcipher shared descriptors are relatively small, thus there is enough
space for the key to be inlined.
Accordingly, there is no need to copy the key in ctx->key.
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to '')
| -rw-r--r-- | drivers/crypto/caam/caamalg_qi.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/crypto/caam/caamalg_qi.c b/drivers/crypto/caam/caamalg_qi.c index ad14b69a052e..b45401786530 100644 --- a/drivers/crypto/caam/caamalg_qi.c +++ b/drivers/crypto/caam/caamalg_qi.c @@ -272,7 +272,6 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, const bool is_rfc3686 = (ctr_mode && strstr(alg_name, "rfc3686")); int ret = 0; - memcpy(ctx->key, key, keylen); #ifdef DEBUG print_hex_dump(KERN_ERR, "key in @" __stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1); @@ -295,9 +294,8 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, keylen -= CTR_RFC3686_NONCE_SIZE; } - dma_sync_single_for_device(jrdev, ctx->key_dma, keylen, DMA_TO_DEVICE); ctx->cdata.keylen = keylen; - ctx->cdata.key_virt = ctx->key; + ctx->cdata.key_virt = key; ctx->cdata.key_inline = true; /* ablkcipher encrypt, decrypt, givencrypt shared descriptors */ @@ -356,10 +354,8 @@ static int xts_ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, return -EINVAL; } - memcpy(ctx->key, key, keylen); - dma_sync_single_for_device(jrdev, ctx->key_dma, keylen, DMA_TO_DEVICE); ctx->cdata.keylen = keylen; - ctx->cdata.key_virt = ctx->key; + ctx->cdata.key_virt = key; ctx->cdata.key_inline = true; /* xts ablkcipher encrypt, decrypt shared descriptors */ |