[PATCH 3.16 250/370] crypto: api - Clear CRYPTO_ALG_DEAD bit before registering an alg

[Ben Hutchings]

3.16.42-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Salvatore Benedetto <salvatore.benedetto@xxxxxxxxx>

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@xxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 crypto/algapi.c | 1 +
 1 file changed, 1 insertion(+)

--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -337,6 +337,7 @@ int crypto_register_alg(struct crypto_al
 	struct crypto_larval *larval;
 	int err;
 
+	alg->cra_flags &= ~CRYPTO_ALG_DEAD;
 	err = crypto_check_alg(alg);
 	if (err)
 		return err;