tree f54bcb1294d2f8dfe87d42cb3603c4dd4ac13d74
parent f347c4facfee3d11eb9cd1c070ab471a8fb7401e
author Herbert Xu <herbert@gondor.apana.org.au> 1195308578 +0800
committer Herbert Xu <herbert@gondor.apana.org.au> 1195817529 +0800

[CRYPTO] api: Fix potential race in crypto_remove_spawn

As it is crypto_remove_spawn may try to unregister an instance which is
yet to be registered.  This patch fixes this by checking whether the
instance has been registered before attempting to remove it.

It also removes a bogus cra_destroy check in crypto_register_instance as
1) it's outside the mutex;
2) we have a check in __crypto_register_alg already.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>