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crypto: caam - merge identical ahash_final/finup shared desc 

Shared descriptors used by ahash_final() and ahash_finup()
are identical, thus get rid of one of them (sh_desc_finup).

Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Horia Geantă 2016-11-09 10:46:24 +02:00 committed by Herbert Xu
parent 24a4f14f0a
commit 9a1a1c08dc
1 changed files with 1 additions and 25 deletions
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26
drivers/crypto/caam/caamhash.c
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@ -103,12 +103,10 @@ struct caam_hash_ctx {
u32 sh_desc_update_first[DESC_HASH_MAX_USED_LEN] ____cacheline_aligned;
u32 sh_desc_fin[DESC_HASH_MAX_USED_LEN] ____cacheline_aligned;
u32 sh_desc_digest[DESC_HASH_MAX_USED_LEN] ____cacheline_aligned;
u32 sh_desc_finup[DESC_HASH_MAX_USED_LEN] ____cacheline_aligned;
dma_addr_t sh_desc_update_dma ____cacheline_aligned;
dma_addr_t sh_desc_update_first_dma;
dma_addr_t sh_desc_fin_dma;
dma_addr_t sh_desc_digest_dma;
dma_addr_t sh_desc_finup_dma;
struct device *jrdev;
u32 alg_type;
u32 alg_op;
@ -380,24 +378,6 @@ static int ahash_set_sh_desc(struct crypto_ahash *ahash)
desc_bytes(desc), 1);
#endif
/* ahash_finup shared descriptor */
desc = ctx->sh_desc_finup;
ahash_ctx_data_to_out(desc, have_key | ctx->alg_type,
OP_ALG_AS_FINALIZE, digestsize, ctx);
ctx->sh_desc_finup_dma = dma_map_single(jrdev, desc, desc_bytes(desc),
DMA_TO_DEVICE);
if (dma_mapping_error(jrdev, ctx->sh_desc_finup_dma)) {
dev_err(jrdev, "unable to map shared descriptor\n");
return -ENOMEM;
}
#ifdef DEBUG
print_hex_dump(KERN_ERR, "ahash finup shdesc@"__stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, desc,
desc_bytes(desc), 1);
#endif
/* ahash_digest shared descriptor */
desc = ctx->sh_desc_digest;
@ -1071,7 +1051,7 @@ static int ahash_finup_ctx(struct ahash_request *req)
/* allocate space for base edesc and hw desc commands, link tables */
edesc = ahash_edesc_alloc(ctx, sec4_sg_src_index + mapped_nents,
ctx->sh_desc_finup, ctx->sh_desc_finup_dma,
ctx->sh_desc_fin, ctx->sh_desc_fin_dma,
flags);
if (!edesc) {
dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
@ -1886,10 +1866,6 @@ static void caam_hash_cra_exit(struct crypto_tfm *tfm)
dma_unmap_single(ctx->jrdev, ctx->sh_desc_digest_dma,
desc_bytes(ctx->sh_desc_digest),
DMA_TO_DEVICE);
if (ctx->sh_desc_finup_dma &&
!dma_mapping_error(ctx->jrdev, ctx->sh_desc_finup_dma))
dma_unmap_single(ctx->jrdev, ctx->sh_desc_finup_dma,
desc_bytes(ctx->sh_desc_finup), DMA_TO_DEVICE);
caam_jr_free(ctx->jrdev);
}