Hi, On Tue, 2017-08-22 at 15:01 +0800, Herbert Xu wrote: > On Wed, Aug 16, 2017 at 07:19:48PM +0800, Ryder Lee wrote: > > Currently, empty messages are not supported in GCM mode, hence add > > a check to prevent producing incorrect results. > > > > Signed-off-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx> > > --- > > drivers/crypto/mediatek/mtk-aes.c | 5 +++++ > > 1 file changed, 5 insertions(+) > > > > diff --git a/drivers/crypto/mediatek/mtk-aes.c b/drivers/crypto/mediatek/mtk-aes.c > > index 9e845e8..efe4e63 100644 > > --- a/drivers/crypto/mediatek/mtk-aes.c > > +++ b/drivers/crypto/mediatek/mtk-aes.c > > @@ -928,8 +928,13 @@ static int mtk_aes_gcm_start(struct mtk_cryp *cryp, struct mtk_aes_rec *aes) > > static int mtk_aes_gcm_crypt(struct aead_request *req, u64 mode) > > { > > struct mtk_aes_base_ctx *ctx = crypto_aead_ctx(crypto_aead_reqtfm(req)); > > + struct mtk_aes_gcm_ctx *gctx = mtk_aes_gcm_ctx_cast(ctx); > > struct mtk_aes_reqctx *rctx = aead_request_ctx(req); > > > > + /* Empty messages are not supported yet */ > > + if (!gctx->textlen && !req->assoclen) > > + return -EINVAL > > Your patch does not compile. Ohh..Somehow I delete the semicolon. I will send v1 soon, sorry about that. Ryder