[PATCH 1/2] crypto: sahara: set nb_[in|out]_sg as signed int

[PATCH 1/2] crypto: sahara: set nb_[in|out]_sg as signed int

[LABBE Corentin]

The two unsigned int variables nb_in_sg and nb_out_sg can be assigned
signed value (-EINVAL) from sg_nents_for_len().
Furthermore they are used only by dma_map_sg and dma_unmap_sg which wait
for an signed int, so they must be set as int.

Fixes: 6c2b74d4774f ("crypto: sahara - check return value of sg_nents_for_len")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
---
 drivers/crypto/sahara.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/sahara.c b/drivers/crypto/sahara.c
index ea9f56a..cc738f3 100644
--- a/drivers/crypto/sahara.c
+++ b/drivers/crypto/sahara.c
@@ -228,9 +228,9 @@ struct sahara_dev {
 
 	size_t			total;
 	struct scatterlist	*in_sg;
-	unsigned int		nb_in_sg;
+	int		nb_in_sg;
 	struct scatterlist	*out_sg;
-	unsigned int		nb_out_sg;
+	int		nb_out_sg;
 
 	u32			error;
 };
-- 
2.4.10

[PATCH 2/2] crypto: picoxcell: set [src|dst]_nents and nents as signed int

[LABBE Corentin]

The unsigned int variables [src|dst]_nents and nents can be assigned
signed value (-EINVAL) from sg_nents_for_len().
Furthermore they are used only by dma_map_sg and dma_unmap_sg which wait
for an signed int, so they must be set as int.

Fixes: f051f95eb47b ("crypto: picoxcell - check return value of sg_nents_for_len")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
---
 drivers/crypto/picoxcell_crypto.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/picoxcell_crypto.c b/drivers/crypto/picoxcell_crypto.c
index a9c6367..15b5e39 100644
--- a/drivers/crypto/picoxcell_crypto.c
+++ b/drivers/crypto/picoxcell_crypto.c
@@ -289,10 +289,11 @@ static struct spacc_ddt *spacc_sg_to_ddt(struct spacc_engine *engine,
 					 enum dma_data_direction dir,
 					 dma_addr_t *ddt_phys)
 {
-	unsigned nents, mapped_ents;
+	unsigned mapped_ents;
 	struct scatterlist *cur;
 	struct spacc_ddt *ddt;
 	int i;
+	int nents;
 
 	nents = sg_nents_for_len(payload, nbytes);
 	if (nents < 0) {
@@ -326,7 +327,7 @@ static int spacc_aead_make_ddts(struct aead_request *areq)
 	struct spacc_engine *engine = req->engine;
 	struct spacc_ddt *src_ddt, *dst_ddt;
 	unsigned total;
-	unsigned int src_nents, dst_nents;
+	int src_nents, dst_nents;
 	struct scatterlist *cur;
 	int i, dst_ents, src_ents;
 
-- 
2.4.10

Re: [PATCH 1/2] crypto: sahara: set nb_[in|out]_sg as signed int

[Herbert Xu]

On Thu, Nov 19, 2015 at 01:38:17PM +0100, LABBE Corentin wrote:
> The two unsigned int variables nb_in_sg and nb_out_sg can be assigned
> signed value (-EINVAL) from sg_nents_for_len().
> Furthermore they are used only by dma_map_sg and dma_unmap_sg which wait
> for an signed int, so they must be set as int.
> 
> Fixes: 6c2b74d4774f ("crypto: sahara - check return value of sg_nents_for_len")
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>

Both patches applied.  Thanks.
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt