crypto: caam - ensure that we clean up after an error
Ensure that we clean up allocations and DMA mappings after encountering an error rather than just giving up and leaking memory and resources. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>hifive-unleashed-5.1
Russell King
Herbert Xu
parent
343e44b15e
commit
32686d34f8
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@ -829,7 +829,7 @@ static int ahash_update_ctx(struct ahash_request *req)
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ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,
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edesc->sec4_sg, DMA_BIDIRECTIONAL);
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if (ret)
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return ret;
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goto err;
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state->buf_dma = try_buf_map_to_sec4_sg(jrdev,
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edesc->sec4_sg + 1,
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@ -860,7 +860,8 @@ static int ahash_update_ctx(struct ahash_request *req)
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DMA_TO_DEVICE);
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if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
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dev_err(jrdev, "unable to map S/G table\n");
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return -ENOMEM;
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ret = -ENOMEM;
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goto err;
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}
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append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len +
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@ -875,13 +876,10 @@ static int ahash_update_ctx(struct ahash_request *req)
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#endif
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ret = caam_jr_enqueue(jrdev, desc, ahash_done_bi, req);
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if (!ret) {
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ret = -EINPROGRESS;
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} else {
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ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len,
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DMA_BIDIRECTIONAL);
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kfree(edesc);
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}
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if (ret)
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goto err;
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ret = -EINPROGRESS;
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} else if (*next_buflen) {
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scatterwalk_map_and_copy(buf + *buflen, req->src, 0,
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req->nbytes, 0);
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@ -897,6 +895,11 @@ static int ahash_update_ctx(struct ahash_request *req)
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#endif
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return ret;
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err:
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ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_BIDIRECTIONAL);
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kfree(edesc);
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return ret;
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}
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static int ahash_final_ctx(struct ahash_request *req)
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@ -939,7 +942,7 @@ static int ahash_final_ctx(struct ahash_request *req)
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ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,
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edesc->sec4_sg, DMA_TO_DEVICE);
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if (ret)
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return ret;
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goto err;
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state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1,
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buf, state->buf_dma, buflen,
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@ -951,7 +954,8 @@ static int ahash_final_ctx(struct ahash_request *req)
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sec4_sg_bytes, DMA_TO_DEVICE);
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if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
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dev_err(jrdev, "unable to map S/G table\n");
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return -ENOMEM;
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ret = -ENOMEM;
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goto err;
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}
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append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len + buflen,
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@ -961,7 +965,8 @@ static int ahash_final_ctx(struct ahash_request *req)
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digestsize);
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if (dma_mapping_error(jrdev, edesc->dst_dma)) {
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dev_err(jrdev, "unable to map dst\n");
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return -ENOMEM;
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ret = -ENOMEM;
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goto err;
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}
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#ifdef DEBUG
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@ -970,13 +975,14 @@ static int ahash_final_ctx(struct ahash_request *req)
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#endif
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ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_src, req);
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if (!ret) {
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ret = -EINPROGRESS;
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} else {
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ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
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kfree(edesc);
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}
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if (ret)
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goto err;
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return -EINPROGRESS;
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err:
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ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
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kfree(edesc);
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return ret;
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}
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@ -1027,7 +1033,7 @@ static int ahash_finup_ctx(struct ahash_request *req)
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ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,
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edesc->sec4_sg, DMA_TO_DEVICE);
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if (ret)
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return ret;
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goto err;
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state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1,
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buf, state->buf_dma, buflen,
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@ -1040,7 +1046,8 @@ static int ahash_finup_ctx(struct ahash_request *req)
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sec4_sg_bytes, DMA_TO_DEVICE);
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if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
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dev_err(jrdev, "unable to map S/G table\n");
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return -ENOMEM;
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ret = -ENOMEM;
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goto err;
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}
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append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len +
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@ -1050,7 +1057,8 @@ static int ahash_finup_ctx(struct ahash_request *req)
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digestsize);
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if (dma_mapping_error(jrdev, edesc->dst_dma)) {
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dev_err(jrdev, "unable to map dst\n");
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return -ENOMEM;
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ret = -ENOMEM;
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goto err;
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}
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#ifdef DEBUG
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@ -1059,13 +1067,14 @@ static int ahash_finup_ctx(struct ahash_request *req)
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#endif
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ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_src, req);
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if (!ret) {
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ret = -EINPROGRESS;
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} else {
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ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
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kfree(edesc);
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}
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if (ret)
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goto err;
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return -EINPROGRESS;
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err:
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ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
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kfree(edesc);
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return ret;
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}
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@ -1117,6 +1126,8 @@ static int ahash_digest(struct ahash_request *req)
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sec4_sg_bytes, DMA_TO_DEVICE);
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if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
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dev_err(jrdev, "unable to map S/G table\n");
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ahash_unmap(jrdev, edesc, req, digestsize);
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kfree(edesc);
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return -ENOMEM;
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}
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src_dma = edesc->sec4_sg_dma;
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@ -1131,6 +1142,8 @@ static int ahash_digest(struct ahash_request *req)
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digestsize);
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if (dma_mapping_error(jrdev, edesc->dst_dma)) {
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dev_err(jrdev, "unable to map dst\n");
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ahash_unmap(jrdev, edesc, req, digestsize);
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kfree(edesc);
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return -ENOMEM;
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}
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@ -1183,6 +1196,8 @@ static int ahash_final_no_ctx(struct ahash_request *req)
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state->buf_dma = dma_map_single(jrdev, buf, buflen, DMA_TO_DEVICE);
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if (dma_mapping_error(jrdev, state->buf_dma)) {
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dev_err(jrdev, "unable to map src\n");
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ahash_unmap(jrdev, edesc, req, digestsize);
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kfree(edesc);
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return -ENOMEM;
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}
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@ -1192,6 +1207,8 @@ static int ahash_final_no_ctx(struct ahash_request *req)
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digestsize);
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if (dma_mapping_error(jrdev, edesc->dst_dma)) {
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dev_err(jrdev, "unable to map dst\n");
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ahash_unmap(jrdev, edesc, req, digestsize);
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kfree(edesc);
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return -ENOMEM;
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}
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edesc->src_nents = 0;
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@ -1285,14 +1302,15 @@ static int ahash_update_no_ctx(struct ahash_request *req)
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DMA_TO_DEVICE);
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if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
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dev_err(jrdev, "unable to map S/G table\n");
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return -ENOMEM;
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ret = -ENOMEM;
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goto err;
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}
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append_seq_in_ptr(desc, edesc->sec4_sg_dma, to_hash, LDST_SGF);
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ret = map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);
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if (ret)
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return ret;
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goto err;
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#ifdef DEBUG
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print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
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@ -1301,16 +1319,13 @@ static int ahash_update_no_ctx(struct ahash_request *req)
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#endif
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ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst, req);
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if (!ret) {
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ret = -EINPROGRESS;
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state->update = ahash_update_ctx;
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state->finup = ahash_finup_ctx;
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state->final = ahash_final_ctx;
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} else {
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ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len,
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DMA_TO_DEVICE);
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kfree(edesc);
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}
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if (ret)
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goto err;
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ret = -EINPROGRESS;
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state->update = ahash_update_ctx;
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state->finup = ahash_finup_ctx;
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state->final = ahash_final_ctx;
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} else if (*next_buflen) {
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scatterwalk_map_and_copy(buf + *buflen, req->src, 0,
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req->nbytes, 0);
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@ -1326,6 +1341,11 @@ static int ahash_update_no_ctx(struct ahash_request *req)
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#endif
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return ret;
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err:
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ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_TO_DEVICE);
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kfree(edesc);
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return ret;
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}
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/* submit ahash finup if it the first job descriptor after update */
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@ -1382,6 +1402,8 @@ static int ahash_finup_no_ctx(struct ahash_request *req)
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sec4_sg_bytes, DMA_TO_DEVICE);
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if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
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dev_err(jrdev, "unable to map S/G table\n");
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ahash_unmap(jrdev, edesc, req, digestsize);
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kfree(edesc);
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return -ENOMEM;
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}
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@ -1392,6 +1414,8 @@ static int ahash_finup_no_ctx(struct ahash_request *req)
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digestsize);
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if (dma_mapping_error(jrdev, edesc->dst_dma)) {
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dev_err(jrdev, "unable to map dst\n");
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ahash_unmap(jrdev, edesc, req, digestsize);
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kfree(edesc);
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return -ENOMEM;
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}
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@ -1476,7 +1500,8 @@ static int ahash_update_first(struct ahash_request *req)
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DMA_TO_DEVICE);
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if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
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dev_err(jrdev, "unable to map S/G table\n");
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return -ENOMEM;
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ret = -ENOMEM;
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goto err;
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}
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src_dma = edesc->sec4_sg_dma;
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options = LDST_SGF;
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@ -1498,7 +1523,7 @@ static int ahash_update_first(struct ahash_request *req)
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ret = map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);
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if (ret)
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return ret;
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goto err;
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#ifdef DEBUG
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print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
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@ -1506,18 +1531,14 @@ static int ahash_update_first(struct ahash_request *req)
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desc_bytes(desc), 1);
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#endif
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ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst,
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req);
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if (!ret) {
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ret = -EINPROGRESS;
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state->update = ahash_update_ctx;
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state->finup = ahash_finup_ctx;
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state->final = ahash_final_ctx;
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} else {
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ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len,
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DMA_TO_DEVICE);
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kfree(edesc);
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}
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ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst, req);
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if (ret)
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goto err;
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ret = -EINPROGRESS;
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state->update = ahash_update_ctx;
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state->finup = ahash_finup_ctx;
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state->final = ahash_final_ctx;
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} else if (*next_buflen) {
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state->update = ahash_update_no_ctx;
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state->finup = ahash_finup_no_ctx;
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@ -1532,6 +1553,11 @@ static int ahash_update_first(struct ahash_request *req)
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#endif
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return ret;
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err:
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ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_TO_DEVICE);
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kfree(edesc);
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return ret;
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}
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static int ahash_finup_first(struct ahash_request *req)
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