diff options
| author | Franck LENORMAND <franck.lenormand@nxp.com> | 2019-02-19 16:56:55 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-23 20:11:12 +0100 |
| commit | fce3d391401a0fd25955a02a4a4577c7eae85aeb (patch) | |
| tree | dd75d19f4ebbc7c734816c2bf17c77481344142c /drivers/crypto | |
| parent | 9b2fdbdce1fb6774cd234b64b854e9090f4d6ba9 (diff) | |
crypto: caam - fix hash context DMA unmap size
commit 65055e2108847af5e577cc7ce6bde45ea136d29a upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 bb1a2cdf1951..f3da7f201b98 100644 --- a/drivers/crypto/caam/caamhash.c +++ b/drivers/crypto/caam/caamhash.c @@ -113,6 +113,7 @@ 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; @@ -165,6 +166,7 @@ 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)) { @@ -218,6 +220,7 @@ 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"); @@ -468,12 +471,10 @@ 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); @@ -1446,6 +1447,7 @@ 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; |