diff options
| author | Franck LENORMAND <franck.lenormand@nxp.com> | 2019-02-19 16:56:55 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-02-28 14:17:58 +0800 |
| commit | 65055e2108847af5e577cc7ce6bde45ea136d29a (patch) | |
| tree | 3561bd9835c3dc82fd052d69ae21476fad711ead /drivers/crypto | |
| parent | 984798de671a927ac73da31096a150df42e6aaf3 (diff) | |
| download | lwn-65055e2108847af5e577cc7ce6bde45ea136d29a.tar.gz lwn-65055e2108847af5e577cc7ce6bde45ea136d29a.zip | |
crypto: caam - fix hash context DMA unmap size
When driver started using state->caam_ctxt for storing both running hash
and final hash, it was not updated to handle different DMA unmap
lengths.
Cc: <stable@vger.kernel.org> # v4.19+
Fixes: c19650d6ea99 ("crypto: caam - fix DMA mapping of stack memory")
Signed-off-by: Franck LENORMAND <franck.lenormand@nxp.com>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/caam/caamhash.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c index 3bba3cb92f03..2c5aca59229b 100644 --- a/drivers/crypto/caam/caamhash.c +++ b/drivers/crypto/caam/caamhash.c @@ -114,6 +114,7 @@ struct caam_hash_ctx { struct caam_hash_state { dma_addr_t buf_dma; dma_addr_t ctx_dma; + int ctx_dma_len; u8 buf_0[CAAM_MAX_HASH_BLOCK_SIZE] ____cacheline_aligned; int buflen_0; u8 buf_1[CAAM_MAX_HASH_BLOCK_SIZE] ____cacheline_aligned; @@ -171,6 +172,7 @@ static inline int map_seq_out_ptr_ctx(u32 *desc, struct device *jrdev, struct caam_hash_state *state, int ctx_len) { + state->ctx_dma_len = ctx_len; state->ctx_dma = dma_map_single(jrdev, state->caam_ctx, ctx_len, DMA_FROM_DEVICE); if (dma_mapping_error(jrdev, state->ctx_dma)) { @@ -212,6 +214,7 @@ static inline int ctx_map_to_sec4_sg(struct device *jrdev, struct caam_hash_state *state, int ctx_len, struct sec4_sg_entry *sec4_sg, u32 flag) { + state->ctx_dma_len = ctx_len; state->ctx_dma = dma_map_single(jrdev, state->caam_ctx, ctx_len, flag); if (dma_mapping_error(jrdev, state->ctx_dma)) { dev_err(jrdev, "unable to map ctx\n"); @@ -594,12 +597,10 @@ static inline void ahash_unmap_ctx(struct device *dev, struct ahash_edesc *edesc, struct ahash_request *req, int dst_len, u32 flag) { - struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); - struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); struct caam_hash_state *state = ahash_request_ctx(req); if (state->ctx_dma) { - dma_unmap_single(dev, state->ctx_dma, ctx->ctx_len, flag); + dma_unmap_single(dev, state->ctx_dma, state->ctx_dma_len, flag); state->ctx_dma = 0; } ahash_unmap(dev, edesc, req, dst_len); @@ -1580,6 +1581,7 @@ static int ahash_init(struct ahash_request *req) state->final = ahash_final_no_ctx; state->ctx_dma = 0; + state->ctx_dma_len = 0; state->current_buf = 0; state->buf_dma = 0; state->buflen_0 = 0; |