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crypto: caam - replace sec4_sg pointer with array

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Since the extended descriptor includes the hardware descriptor, and the
sec4 scatterlist immediately follows this, we can declare it as a array
at the very end of the extended descriptor.  This allows us to get rid
of an initialiser for every site where we allocate an extended
descriptor.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Russell King 2016-08-08 18:04:52 +01:00 committed by Herbert Xu
parent d7b24ed4a9
commit 343e44b15e
1 changed files with 3 additions and 9 deletions
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12
drivers/crypto/caam/caamhash.c
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@ -595,16 +595,16 @@ badkey:
* @sec4_sg_dma: physical mapped address of h/w link table
* @src_nents: number of segments in input scatterlist
* @sec4_sg_bytes: length of dma mapped sec4_sg space
* @sec4_sg: pointer to h/w link table
* @hw_desc: the h/w job descriptor followed by any referenced link tables
* @sec4_sg: h/w link table
*/
struct ahash_edesc {
dma_addr_t dst_dma;
dma_addr_t sec4_sg_dma;
int src_nents;
int sec4_sg_bytes;
struct sec4_sg_entry *sec4_sg;
u32 hw_desc[DESC_JOB_IO_LEN / sizeof(u32)] ____cacheline_aligned;
struct sec4_sg_entry sec4_sg[0];
};
static inline void ahash_unmap(struct device *dev,
@ -825,7 +825,6 @@ static int ahash_update_ctx(struct ahash_request *req)
edesc->src_nents = src_nents;
edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->sec4_sg = (void *)(edesc + 1);
ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,
edesc->sec4_sg, DMA_BIDIRECTIONAL);
@ -935,7 +934,6 @@ static int ahash_final_ctx(struct ahash_request *req)
init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER | HDR_REVERSE);
edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->sec4_sg = (void *)(edesc + 1);
edesc->src_nents = 0;
ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,
@ -1025,7 +1023,6 @@ static int ahash_finup_ctx(struct ahash_request *req)
edesc->src_nents = src_nents;
edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->sec4_sg = (void *)(edesc + 1);
ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,
edesc->sec4_sg, DMA_TO_DEVICE);
@ -1106,7 +1103,7 @@ static int ahash_digest(struct ahash_request *req)
dev_err(jrdev, "could not allocate extended descriptor\n");
return -ENOMEM;
}
edesc->sec4_sg = (void *)(edesc + 1);
edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->src_nents = src_nents;
@ -1264,7 +1261,6 @@ static int ahash_update_no_ctx(struct ahash_request *req)
edesc->src_nents = src_nents;
edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->sec4_sg = (void *)(edesc + 1);
edesc->dst_dma = 0;
state->buf_dma = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg,
@ -1375,7 +1371,6 @@ static int ahash_finup_no_ctx(struct ahash_request *req)
edesc->src_nents = src_nents;
edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->sec4_sg = (void *)(edesc + 1);
state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg, buf,
state->buf_dma, buflen,
@ -1470,7 +1465,6 @@ static int ahash_update_first(struct ahash_request *req)
edesc->src_nents = src_nents;
edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->sec4_sg = (void *)(edesc + 1);
edesc->dst_dma = 0;
if (src_nents > 1) {