If a zero length request is submitted through the skcipher api, do not offload it and return success. Reviewed-by: Conor Mcloughlin <conor.mcloughlin@xxxxxxxxx> Tested-by: Sergey Portnoy <sergey.portnoy@xxxxxxxxx> Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@xxxxxxxxx> --- drivers/crypto/qat/qat_common/qat_algs.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/crypto/qat/qat_common/qat_algs.c b/drivers/crypto/qat/qat_common/qat_algs.c index 868fefa9bb65..2842b2cdaa90 100644 --- a/drivers/crypto/qat/qat_common/qat_algs.c +++ b/drivers/crypto/qat/qat_common/qat_algs.c @@ -1058,6 +1058,9 @@ static int qat_alg_ablkcipher_encrypt(struct ablkcipher_request *req) struct device *dev = &GET_DEV(ctx->inst->accel_dev); int ret, ctr = 0; + if (req->nbytes == 0) + return 0; + qat_req->iv = dma_alloc_coherent(dev, AES_BLOCK_SIZE, &qat_req->iv_paddr, GFP_ATOMIC); if (!qat_req->iv) @@ -1115,6 +1118,9 @@ static int qat_alg_ablkcipher_decrypt(struct ablkcipher_request *req) struct device *dev = &GET_DEV(ctx->inst->accel_dev); int ret, ctr = 0; + if (req->nbytes == 0) + return 0; + qat_req->iv = dma_alloc_coherent(dev, AES_BLOCK_SIZE, &qat_req->iv_paddr, GFP_ATOMIC); if (!qat_req->iv) -- 2.20.1
