From ae7d33f53a56c432e2db994df25ed7b2c0410819 Mon Sep 17 00:00:00 2001
From: Salvatore Benedetto <salvatore.benedetto@intel.com>
Date: Fri, 13 Jan 2017 11:54:08 +0000
Subject: [PATCH] crypto: api - Clear CRYPTO_ALG_DEAD bit before registering an
 alg

commit d6040764adcb5cb6de1489422411d701c158bb69 upstream.

Make sure CRYPTO_ALG_DEAD bit is cleared before proceeding with
the algorithm registration. This fixes qat-dh registration when
driver is restarted

Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 crypto/algapi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/crypto/algapi.c b/crypto/algapi.c
index 59bf491..43f5bdb 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -357,6 +357,7 @@ int crypto_register_alg(struct crypto_alg *alg)
 	struct crypto_larval *larval;
 	int err;
 
+	alg->cra_flags &= ~CRYPTO_ALG_DEAD;
 	err = crypto_check_alg(alg);
 	if (err)
 		return err;
-- 
2.7.4