crypto: marvell/cesa - avoid adding final operation within loop
Avoid adding the final operation within the loop, but instead add it outside. We combine this with the handling for the no-data case. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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@ -602,6 +602,7 @@ static int mv_cesa_ahash_dma_req_init(struct ahash_request *req)
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struct mv_cesa_tdma_chain chain;
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struct mv_cesa_ahash_dma_iter iter;
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struct mv_cesa_op_ctx *op = NULL;
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unsigned int frag_len;
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int ret;
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dreq->chain.first = NULL;
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@ -631,25 +632,34 @@ static int mv_cesa_ahash_dma_req_init(struct ahash_request *req)
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/*
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* Add all the new data, inserting an operation block and
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* launch command between each full SRAM block-worth of
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* data.
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* data. We intentionally do not add the final op block.
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*/
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do {
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while (true) {
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ret = mv_cesa_dma_add_op_transfers(&chain, &iter.base,
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&iter.src, flags);
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if (ret)
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goto err_free_tdma;
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frag_len = iter.base.op_len;
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if (!mv_cesa_ahash_req_iter_next_op(&iter))
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break;
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op = mv_cesa_dma_add_frag(&chain, &creq->op_tmpl,
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iter.base.op_len, flags);
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frag_len, flags);
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if (IS_ERR(op)) {
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ret = PTR_ERR(op);
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goto err_free_tdma;
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}
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} while (mv_cesa_ahash_req_iter_next_op(&iter));
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} else if (iter.base.op_len) {
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}
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} else {
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/* Account for the data that was in the cache. */
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op = mv_cesa_dma_add_frag(&chain, &creq->op_tmpl,
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iter.base.op_len, flags);
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frag_len = iter.base.op_len;
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}
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if (frag_len) {
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op = mv_cesa_dma_add_frag(&chain, &creq->op_tmpl, frag_len,
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flags);
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if (IS_ERR(op)) {
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ret = PTR_ERR(op);
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goto err_free_tdma;
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