diff options
Diffstat (limited to 'drivers/crypto/caam/key_gen.c')
| -rw-r--r-- | drivers/crypto/caam/key_gen.c | 30 |
1 files changed, 10 insertions, 20 deletions
diff --git a/drivers/crypto/caam/key_gen.c b/drivers/crypto/caam/key_gen.c index 312b5f042f31..8d0713fae6ac 100644 --- a/drivers/crypto/caam/key_gen.c +++ b/drivers/crypto/caam/key_gen.c @@ -48,7 +48,7 @@ int gen_split_key(struct device *jrdev, u8 *key_out, { u32 *desc; struct split_key_result result; - dma_addr_t dma_addr_in, dma_addr_out; + dma_addr_t dma_addr; int ret = -ENOMEM; adata->keylen = split_key_len(adata->algtype & OP_ALG_ALGSEL_MASK); @@ -71,22 +71,17 @@ int gen_split_key(struct device *jrdev, u8 *key_out, return ret; } - dma_addr_in = dma_map_single(jrdev, (void *)key_in, keylen, - DMA_TO_DEVICE); - if (dma_mapping_error(jrdev, dma_addr_in)) { - dev_err(jrdev, "unable to map key input memory\n"); - goto out_free; - } + memcpy(key_out, key_in, keylen); - dma_addr_out = dma_map_single(jrdev, key_out, adata->keylen_pad, - DMA_FROM_DEVICE); - if (dma_mapping_error(jrdev, dma_addr_out)) { - dev_err(jrdev, "unable to map key output memory\n"); - goto out_unmap_in; + dma_addr = dma_map_single(jrdev, key_out, adata->keylen_pad, + DMA_BIDIRECTIONAL); + if (dma_mapping_error(jrdev, dma_addr)) { + dev_err(jrdev, "unable to map key memory\n"); + goto out_free; } init_job_desc(desc, 0); - append_key(desc, dma_addr_in, keylen, CLASS_2 | KEY_DEST_CLASS_REG); + append_key(desc, dma_addr, keylen, CLASS_2 | KEY_DEST_CLASS_REG); /* Sets MDHA up into an HMAC-INIT */ append_operation(desc, (adata->algtype & OP_ALG_ALGSEL_MASK) | @@ -104,12 +99,10 @@ int gen_split_key(struct device *jrdev, u8 *key_out, * FIFO_STORE with the explicit split-key content store * (0x26 output type) */ - append_fifo_store(desc, dma_addr_out, adata->keylen, + append_fifo_store(desc, dma_addr, adata->keylen, LDST_CLASS_2_CCB | FIFOST_TYPE_SPLIT_KEK); #ifdef DEBUG - print_hex_dump(KERN_ERR, "ctx.key@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, key_in, keylen, 1); print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); #endif @@ -129,10 +122,7 @@ int gen_split_key(struct device *jrdev, u8 *key_out, #endif } - dma_unmap_single(jrdev, dma_addr_out, adata->keylen_pad, - DMA_FROM_DEVICE); -out_unmap_in: - dma_unmap_single(jrdev, dma_addr_in, keylen, DMA_TO_DEVICE); + dma_unmap_single(jrdev, dma_addr, adata->keylen_pad, DMA_BIDIRECTIONAL); out_free: kfree(desc); return ret; |