crypto: caam - fix addressing of struct member

buf_0 and buf_1 in caam_hash_state are not next to each other.
Accessing buf_1 is incorrect from &buf_0 with an offset of only
size_of(buf_0). The same issue is also with buflen_0 and buflen_1

Cc: <stable@vger.kernel.org> # 3.13+
Signed-off-by: Cristian Stoica <cristian.stoica@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c
index 061f3fb..f347ab7 100644 (file)
--- a/drivers/crypto/caam/caamhash.c
+++ b/drivers/crypto/caam/caamhash.c
@@ -1417,9 +1417,9 @@ static int ahash_update_first(struct ahash_request *req)
        struct device *jrdev = ctx->jrdev;
        gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
                       CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
-       u8 *next_buf = state->buf_0 + state->current_buf *
-                      CAAM_MAX_HASH_BLOCK_SIZE;
-       int *next_buflen = &state->buflen_0 + state->current_buf;
+       u8 *next_buf = state->current_buf ? state->buf_1 : state->buf_0;
+       int *next_buflen = state->current_buf ?
+               &state->buflen_1 : &state->buflen_0;
        int to_hash;
        u32 *sh_desc = ctx->sh_desc_update_first, *desc;
        dma_addr_t ptr = ctx->sh_desc_update_first_dma;