[PATCH v4 09/14] crypto: qat - comply with crypto_kpp_maxsize()

[Tudor Ambarus]

crypto_kpp_maxsize() asks for the output buffer size without
caring for errors. It allways assume that will be called after
a valid setkey. Comply with it and return what he wants.

Signed-off-by: Tudor Ambarus <tudor.amba...@microchip.com>
---
 drivers/crypto/qat/qat_common/qat_asym_algs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/qat/qat_common/qat_asym_algs.c 
b/drivers/crypto/qat/qat_common/qat_asym_algs.c
index 2aab80b..1d882a7 100644
--- a/drivers/crypto/qat/qat_common/qat_asym_algs.c
+++ b/drivers/crypto/qat/qat_common/qat_asym_algs.c
@@ -521,11 +521,11 @@ static int qat_dh_set_secret(struct crypto_kpp *tfm, 
const void *buf,
        return 0;
 }
 
-static int qat_dh_max_size(struct crypto_kpp *tfm)
+static unsigned int qat_dh_max_size(struct crypto_kpp *tfm)
 {
        struct qat_dh_ctx *ctx = kpp_tfm_ctx(tfm);
 
-       return ctx->p ? ctx->p_size : -EINVAL;
+       return ctx->p_size;
 }
 
 static int qat_dh_init_tfm(struct crypto_kpp *tfm)
-- 
2.7.4