crypto: shash - fix missed optimization in shash_ahash_digest()

shash_ahash_digest(), which is the ->digest() method for ahash tfms that
use an shash algorithm, has an optimization where crypto_shash_digest()
is called if the data is in a single page.  But an off-by-one error
prevented this path from being taken unless the user happened to provide
extra data in the scatterlist.  Fix it.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 1 deletions

diff --git a/crypto/shash.c b/crypto/shash.c
index 15b369c4745f..b85930e9a7a2 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -307,7 +307,7 @@ int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc)
 
         if (nbytes &&
             (sg = req->src, offset = sg->offset,
-             nbytes < min(sg->length, ((unsigned int)(PAGE_SIZE)) - offset))) {
+             nbytes <= min(sg->length, ((unsigned int)(PAGE_SIZE)) - offset))) {
                 void *data;
 
                 data = kmap_atomic(sg_page(sg));