It makes no sense to allocate memory via kzalloc, we can use static buffer, speedup data processing and don't think about kfree() calls. Signed-off-by: Alexey Romanov <avromanov@xxxxxxxxxxxxxxxxx> --- drivers/crypto/amlogic/amlogic-gxl-cipher.c | 24 ++++++++------------- drivers/crypto/amlogic/amlogic-gxl.h | 6 +++--- 2 files changed, 12 insertions(+), 18 deletions(-) diff --git a/drivers/crypto/amlogic/amlogic-gxl-cipher.c b/drivers/crypto/amlogic/amlogic-gxl-cipher.c index 9c96e7b65e1e..3f42b2cc568d 100644 --- a/drivers/crypto/amlogic/amlogic-gxl-cipher.c +++ b/drivers/crypto/amlogic/amlogic-gxl-cipher.c @@ -155,8 +155,7 @@ static void meson_setup_keyiv_descs(struct cipher_ctx *ctx) return; if (blockmode == DESC_OPMODE_CBC) { - memcpy(op->key + AES_MAX_KEY_SIZE, ctx->areq->iv, ivsize); - ctx->keyiv.len = AES_MAX_KEY_SIZE + ivsize; + memcpy(op->keyiv + AES_MAX_KEY_SIZE, ctx->areq->iv, ivsize); dma_sync_single_for_device(mc->dev, ctx->keyiv.addr, ctx->keyiv.len, DMA_TO_DEVICE); } @@ -319,16 +318,16 @@ static int meson_cipher(struct skcipher_request *areq) mc->chanlist[rctx->flow].stat_req++; #endif - op->key = kzalloc(48, GFP_KERNEL | GFP_DMA); - if (!op.key) - return -ENOMEM; - - memcpy(op->key, op->key, op->keylen); ctx.keyiv.len = op->keylen; if (ctx.keyiv.len == AES_KEYSIZE_192) ctx.keyiv.len = AES_MAX_KEY_SIZE; - ctx.keyiv.addr = dma_map_single(mc->dev, op->key, ctx.keyiv.len, + if (algt->blockmode == DESC_OPMODE_CBC) { + memcpy(op->keyiv + AES_MAX_KEY_SIZE, areq->iv, ivsize); + ctx.keyiv.len = AES_MAX_KEY_SIZE + ivsize; + } + + ctx.keyiv.addr = dma_map_single(mc->dev, op->keyiv, ctx.keyiv.len, DMA_TO_DEVICE); err = dma_mapping_error(mc->dev, ctx.keyiv.addr); if (err) { @@ -366,8 +365,6 @@ static int meson_cipher(struct skcipher_request *areq) meson_unmap_scatterlist(areq, mc); theend: - kfree_sensitive(op->key); - return err; } @@ -450,7 +447,6 @@ static void meson_cipher_exit(struct crypto_tfm *tfm) { struct meson_cipher_tfm_ctx *op = crypto_tfm_ctx(tfm); - kfree_sensitive(op->key); crypto_free_skcipher(op->fallback_tfm); } @@ -474,11 +470,9 @@ static int meson_aes_setkey(struct crypto_skcipher *tfm, const u8 *key, dev_dbg(mc->dev, "ERROR: Invalid keylen %u\n", keylen); return -EINVAL; } - kfree_sensitive(op->key); + + memcpy(op->keyiv, key, keylen); op->keylen = keylen; - op->key = kmemdup(key, keylen, GFP_KERNEL | GFP_DMA); - if (!op->key) - return -ENOMEM; return crypto_skcipher_setkey(op->fallback_tfm, key, keylen); } diff --git a/drivers/crypto/amlogic/amlogic-gxl.h b/drivers/crypto/amlogic/amlogic-gxl.h index d1665bbfe6d0..3d0793cd80f6 100644 --- a/drivers/crypto/amlogic/amlogic-gxl.h +++ b/drivers/crypto/amlogic/amlogic-gxl.h @@ -127,15 +127,15 @@ struct meson_cipher_req_ctx { /* * struct meson_cipher_tfm_ctx - context for a skcipher TFM - * @key: pointer to key data + * @keyiv: key data * @keylen: len of the key * @keymode: The keymode(type and size of key) associated with this TFM * @mc: pointer to the private data of driver handling this TFM * @fallback_tfm: pointer to the fallback TFM */ struct meson_cipher_tfm_ctx { - u32 *key; - u32 keylen; + u8 keyiv[AES_MAX_KEY_SIZE + AES_BLOCK_SIZE] ____cacheline_aligned; + u32 keylen ____cacheline_aligned; u32 keymode; struct meson_dev *mc; struct crypto_skcipher *fallback_tfm; -- 2.34.1