Merge Linus master into drm-next

The merge is clean, but the arm build fails afterwards,
due to API changes in the regulator tree.

I've included the patch into the merge to fix the build.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 19 insertions, 23 deletions

diff --git a/crypto/algapi.c b/crypto/algapi.c
index 83b04e0884b1..d2627a3d4ed8 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -64,6 +64,8 @@ static int crypto_check_alg(struct crypto_alg *alg)
 	if (alg->cra_priority < 0)
 		return -EINVAL;
 
+	atomic_set(&alg->cra_refcnt, 1);
+
 	return crypto_set_driver_name(alg);
 }
 
@@ -99,10 +101,9 @@ static struct list_head *crypto_more_spawns(struct crypto_alg *alg,
 	return &n->list == stack ? top : &n->inst->alg.cra_users;
 }
 
-static void crypto_remove_spawn(struct crypto_spawn *spawn,
-				struct list_head *list)
+static void crypto_remove_instance(struct crypto_instance *inst,
+				   struct list_head *list)
 {
-	struct crypto_instance *inst = spawn->inst;
 	struct crypto_template *tmpl = inst->tmpl;
 
 	if (crypto_is_dead(&inst->alg))
@@ -167,7 +168,7 @@ void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
 		if (spawn->alg)
 			list_move(&spawn->list, &spawn->alg->cra_users);
 		else
-			crypto_remove_spawn(spawn, list);
+			crypto_remove_instance(spawn->inst, list);
 	}
 }
 EXPORT_SYMBOL_GPL(crypto_remove_spawns);
@@ -188,7 +189,6 @@ static struct crypto_larval *__crypto_register_alg(struct crypto_alg *alg)
 
 	ret = -EEXIST;
 
-	atomic_set(&alg->cra_refcnt, 1);
 	list_for_each_entry(q, &crypto_alg_list, cra_list) {
 		if (q == alg)
 			goto err;
@@ -523,11 +523,14 @@ int crypto_register_instance(struct crypto_template *tmpl,
 
 	err = crypto_check_alg(&inst->alg);
 	if (err)
-		goto err;
+		return err;
 
 	inst->alg.cra_module = tmpl->module;
 	inst->alg.cra_flags |= CRYPTO_ALG_INSTANCE;
 
+	if (unlikely(!crypto_mod_get(&inst->alg)))
+		return -EAGAIN;
+
 	down_write(&crypto_alg_sem);
 
 	larval = __crypto_register_alg(&inst->alg);
@@ -545,37 +548,30 @@ unlock:
 		goto err;
 
 	crypto_wait_for_test(larval);
+
+	/* Remove instance if test failed */
+	if (!(inst->alg.cra_flags & CRYPTO_ALG_TESTED))
+		crypto_unregister_instance(inst);
 	err = 0;
 
 err:
+	crypto_mod_put(&inst->alg);
 	return err;
 }
 EXPORT_SYMBOL_GPL(crypto_register_instance);
 
-int crypto_unregister_instance(struct crypto_alg *alg)
+int crypto_unregister_instance(struct crypto_instance *inst)
 {
-	int err;
-	struct crypto_instance *inst = (void *)alg;
-	struct crypto_template *tmpl = inst->tmpl;
-	LIST_HEAD(users);
-
-	if (!(alg->cra_flags & CRYPTO_ALG_INSTANCE))
-		return -EINVAL;
-
-	BUG_ON(atomic_read(&alg->cra_refcnt) != 1);
+	LIST_HEAD(list);
 
 	down_write(&crypto_alg_sem);
 
-	hlist_del_init(&inst->list);
-	err = crypto_remove_alg(alg, &users);
+	crypto_remove_spawns(&inst->alg, &list, NULL);
+	crypto_remove_instance(inst, &list);
 
 	up_write(&crypto_alg_sem);
 
-	if (err)
-		return err;
-
-	tmpl->free(inst);
-	crypto_remove_final(&users);
+	crypto_remove_final(&list);
 
 	return 0;
 }