[PATCH 4.9 12/66] crypto: api - Clear CRYPTO_ALG_DEAD bit before registering an alg

[Greg Kroah-Hartman]

4.9-stable review patch.  If anyone has any objections, please let me know.

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

From: Salvatore Benedetto <salvatore.benede...@intel.com>

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.benede...@intel.com>
Signed-off-by: Herbert Xu <herb...@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 crypto/algapi.c |    1 +
 1 file changed, 1 insertion(+)

--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -356,6 +356,7 @@ 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;