crypto: atmel-sha - fix crash when computing digest on empty message
This patch fixes a crash which occured during the computation of the
digest of an empty message.
Indeed, when processing an empty message, the atmel_sha_handle_queue()
function was never called, hence the dd->req pointer remained
uninitialized.
Later, when the atmel_sha_final_req() function was called, it used
to crash while using this uninitialized dd->req pointer.
Hence this patch adds missing initializations of dd->req before calls of
the atmel_sha_final_req() function.
This bug prevented us from passing the tcrypt test suite on SHA algo.
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c
index 20de861..006b2ae 100644
--- a/drivers/crypto/atmel-sha.c
+++ b/drivers/crypto/atmel-sha.c
@@ -939,6 +939,7 @@
if (err)
goto err1;
+ dd->req = req;
dd->flags |= SHA_FLAGS_BUSY;
err = atmel_sha_final_req(dd);
} else {