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Subject[PATCH 5.0 023/238] crypto: rockchip - fix scatterlist nents error
Date
5.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Zhang Zhijie <zhangzj@rock-chips.com>

commit 4359669a087633132203c52d67dd8c31e09e7b2e upstream.

In some cases, the nents of src scatterlist is different from
dst scatterlist. So two variables are used to handle the nents
of src&dst scatterlist.

Reported-by: Eric Biggers <ebiggers@google.com>
Fixes: 433cd2c617bf ("crypto: rockchip - add crypto driver for rk3288")
Cc: <stable@vger.kernel.org> # v4.5+
Signed-off-by: Zhang Zhijie <zhangzj@rock-chips.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/crypto/rockchip/rk3288_crypto.c | 2 +-
drivers/crypto/rockchip/rk3288_crypto.h | 3 ++-
drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c | 5 +++--
drivers/crypto/rockchip/rk3288_crypto_ahash.c | 2 +-
4 files changed, 7 insertions(+), 5 deletions(-)

--- a/drivers/crypto/rockchip/rk3288_crypto.c
+++ b/drivers/crypto/rockchip/rk3288_crypto.c
@@ -119,7 +119,7 @@ static int rk_load_data(struct rk_crypto
count = (dev->left_bytes > PAGE_SIZE) ?
PAGE_SIZE : dev->left_bytes;

- if (!sg_pcopy_to_buffer(dev->first, dev->nents,
+ if (!sg_pcopy_to_buffer(dev->first, dev->src_nents,
dev->addr_vir, count,
dev->total - dev->left_bytes)) {
dev_err(dev->dev, "[%s:%d] pcopy err\n",
--- a/drivers/crypto/rockchip/rk3288_crypto.h
+++ b/drivers/crypto/rockchip/rk3288_crypto.h
@@ -207,7 +207,8 @@ struct rk_crypto_info {
void *addr_vir;
int aligned;
int align_size;
- size_t nents;
+ size_t src_nents;
+ size_t dst_nents;
unsigned int total;
unsigned int count;
dma_addr_t addr_in;
--- a/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c
+++ b/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c
@@ -260,8 +260,9 @@ static int rk_ablk_start(struct rk_crypt
dev->total = req->nbytes;
dev->sg_src = req->src;
dev->first = req->src;
- dev->nents = sg_nents(req->src);
+ dev->src_nents = sg_nents(req->src);
dev->sg_dst = req->dst;
+ dev->dst_nents = sg_nents(req->dst);
dev->aligned = 1;

spin_lock_irqsave(&dev->lock, flags);
@@ -297,7 +298,7 @@ static int rk_ablk_rx(struct rk_crypto_i

dev->unload_data(dev);
if (!dev->aligned) {
- if (!sg_pcopy_from_buffer(req->dst, dev->nents,
+ if (!sg_pcopy_from_buffer(req->dst, dev->dst_nents,
dev->addr_vir, dev->count,
dev->total - dev->left_bytes -
dev->count)) {
--- a/drivers/crypto/rockchip/rk3288_crypto_ahash.c
+++ b/drivers/crypto/rockchip/rk3288_crypto_ahash.c
@@ -206,7 +206,7 @@ static int rk_ahash_start(struct rk_cryp
dev->sg_dst = NULL;
dev->sg_src = req->src;
dev->first = req->src;
- dev->nents = sg_nents(req->src);
+ dev->src_nents = sg_nents(req->src);
rctx = ahash_request_ctx(req);
rctx->mode = 0;


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