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authorMarcelo Cerri <mhcerri@linux.vnet.ibm.com>2013-08-29 11:36:40 -0300
committerHerbert Xu <herbert@gondor.apana.org.au>2013-09-02 20:32:56 +1000
commit069fa0453f9dc86fd97dd5b3f5fda4724ed5ff69 (patch)
tree7ceed83003c64dd51c5a99fafef144bf8320e124 /drivers/crypto
parentdec0ed6c1b2c8c2aa37c04feccaf4784764c95f1 (diff)
downloadlinux-linaro-stable-069fa0453f9dc86fd97dd5b3f5fda4724ed5ff69.tar.gz
crypto: nx - fix SHA-2 for chunks bigger than block size
Each call to the co-processor, with exception of the last call, needs to send data that is multiple of block size. As consequence, any remaining data is kept in the internal NX context. This patch fixes a bug in the driver that causes it to save incorrect data into the context when data is bigger than the block size. Reviewed-by: Joy Latten <jmlatten@linux.vnet.ibm.com> Signed-off-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
-rw-r--r--drivers/crypto/nx/nx-sha256.c2
-rw-r--r--drivers/crypto/nx/nx-sha512.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/crypto/nx/nx-sha256.c b/drivers/crypto/nx/nx-sha256.c
index 6547a7104bf6..da0b24a7633f 100644
--- a/drivers/crypto/nx/nx-sha256.c
+++ b/drivers/crypto/nx/nx-sha256.c
@@ -129,7 +129,7 @@ static int nx_sha256_update(struct shash_desc *desc, const u8 *data,
NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION;
total -= to_process;
- data += to_process;
+ data += to_process - sctx->count;
sctx->count = 0;
in_sg = nx_ctx->in_sg;
} while (leftover >= SHA256_BLOCK_SIZE);
diff --git a/drivers/crypto/nx/nx-sha512.c b/drivers/crypto/nx/nx-sha512.c
index 236e6afeab10..4ae5b0f221d5 100644
--- a/drivers/crypto/nx/nx-sha512.c
+++ b/drivers/crypto/nx/nx-sha512.c
@@ -131,7 +131,7 @@ static int nx_sha512_update(struct shash_desc *desc, const u8 *data,
NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION;
total -= to_process;
- data += to_process;
+ data += to_process - sctx->count[0];
sctx->count[0] = 0;
in_sg = nx_ctx->in_sg;
} while (leftover >= SHA512_BLOCK_SIZE);