From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 296C1C433DF for ; Thu, 9 Jul 2020 05:36:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0B97F20657 for ; Thu, 9 Jul 2020 05:36:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726091AbgGIFg3 (ORCPT ); Thu, 9 Jul 2020 01:36:29 -0400 Received: from helcar.hmeau.com ([216.24.177.18]:34830 "EHLO fornost.hmeau.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726129AbgGIFg3 (ORCPT ); Thu, 9 Jul 2020 01:36:29 -0400 Received: from gwarestrin.arnor.me.apana.org.au ([192.168.0.7]) by fornost.hmeau.com with smtp (Exim 4.92 #5 (Debian)) id 1jtPEJ-0004jF-5c; Thu, 09 Jul 2020 15:36:20 +1000 Received: by gwarestrin.arnor.me.apana.org.au (sSMTP sendmail emulation); Thu, 09 Jul 2020 15:36:19 +1000 Date: Thu, 9 Jul 2020 15:36:19 +1000 From: Herbert Xu To: Yang Shen Cc: davem@davemloft.net, linux-crypto@vger.kernel.org, xuzaibo@huawei.com, wangzhou1@hisilicon.com Subject: Re: [Patch v2 8/9] crypto: hisilicon/qm - fix the process of register algorithms to crypto Message-ID: <20200709053619.GA5637@gondor.apana.org.au> References: <1593587995-7391-1-git-send-email-shenyang39@huawei.com> <1593587995-7391-9-git-send-email-shenyang39@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1593587995-7391-9-git-send-email-shenyang39@huawei.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org On Wed, Jul 01, 2020 at 03:19:54PM +0800, Yang Shen wrote: > When the devices are removed or not existing, the corresponding algorithms > which are registered by 'hisi-zip' driver can't be used. > > Move 'hisi_zip_register_to_crypto' from 'hisi_zip_init' to > 'hisi_zip_probe'. The algorithms will be registered to crypto only when > there is device bind on the driver. And when the devices are removed, > the algorithms will be unregistered. You can't just unregister a live algorithm because if someone holds a reference count on it then the Crypto API will crash. Cheers, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt