From patchwork Tue Jul 30 11:06:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Iuliana Prodan X-Patchwork-Id: 11065571 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 93C0713A0 for ; Tue, 30 Jul 2019 11:07:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 83D5228758 for ; Tue, 30 Jul 2019 11:07:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 786AD287B6; Tue, 30 Jul 2019 11:07:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 123B928758 for ; Tue, 30 Jul 2019 11:07:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730324AbfG3LHM (ORCPT ); Tue, 30 Jul 2019 07:07:12 -0400 Received: from inva020.nxp.com ([92.121.34.13]:37138 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730340AbfG3LG5 (ORCPT ); Tue, 30 Jul 2019 07:06:57 -0400 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 218CB1A0685; Tue, 30 Jul 2019 13:06:55 +0200 (CEST) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 14CB51A0676; Tue, 30 Jul 2019 13:06:55 +0200 (CEST) Received: from lorenz.ea.freescale.net (lorenz.ea.freescale.net [10.171.71.5]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id 9F0CD204D6; Tue, 30 Jul 2019 13:06:54 +0200 (CEST) From: Iuliana Prodan To: Herbert Xu , Horia Geanta , Aymen Sghaier Cc: "David S. Miller" , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-imx Subject: [PATCH v4 13/14] crypto: caam - unregister algorithm only if the registration succeeded Date: Tue, 30 Jul 2019 14:06:44 +0300 Message-Id: <1564484805-28735-14-git-send-email-iuliana.prodan@nxp.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1564484805-28735-1-git-send-email-iuliana.prodan@nxp.com> References: <1564484805-28735-1-git-send-email-iuliana.prodan@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP To know if a registration succeeded added a new struct, caam_akcipher_alg, that keeps, also, the registration status. This status is updated in caam_pkc_init and verified in caam_pkc_exit to unregister an algorithm. Fixes: 1b46c90c8e00 ("crypto: caam - convert top level drivers to libraries") Signed-off-by: Iuliana Prodan Reviewed-by: Horia Geanta --- drivers/crypto/caam/caampkc.c | 49 ++++++++++++++++++++++++++----------------- 1 file changed, 30 insertions(+), 19 deletions(-) diff --git a/drivers/crypto/caam/caampkc.c b/drivers/crypto/caam/caampkc.c index e00a470..5b12b23 100644 --- a/drivers/crypto/caam/caampkc.c +++ b/drivers/crypto/caam/caampkc.c @@ -35,6 +35,11 @@ static u8 *zero_buffer; */ static bool init_done; +struct caam_akcipher_alg { + struct akcipher_alg akcipher; + bool registered; +}; + static void rsa_io_unmap(struct device *dev, struct rsa_edesc *edesc, struct akcipher_request *req) { @@ -1058,22 +1063,24 @@ static void caam_rsa_exit_tfm(struct crypto_akcipher *tfm) caam_jr_free(ctx->dev); } -static struct akcipher_alg caam_rsa = { - .encrypt = caam_rsa_enc, - .decrypt = caam_rsa_dec, - .set_pub_key = caam_rsa_set_pub_key, - .set_priv_key = caam_rsa_set_priv_key, - .max_size = caam_rsa_max_size, - .init = caam_rsa_init_tfm, - .exit = caam_rsa_exit_tfm, - .reqsize = sizeof(struct caam_rsa_req_ctx), - .base = { - .cra_name = "rsa", - .cra_driver_name = "rsa-caam", - .cra_priority = 3000, - .cra_module = THIS_MODULE, - .cra_ctxsize = sizeof(struct caam_rsa_ctx), - }, +static struct caam_akcipher_alg caam_rsa = { + .akcipher = { + .encrypt = caam_rsa_enc, + .decrypt = caam_rsa_dec, + .set_pub_key = caam_rsa_set_pub_key, + .set_priv_key = caam_rsa_set_priv_key, + .max_size = caam_rsa_max_size, + .init = caam_rsa_init_tfm, + .exit = caam_rsa_exit_tfm, + .reqsize = sizeof(struct caam_rsa_req_ctx), + .base = { + .cra_name = "rsa", + .cra_driver_name = "rsa-caam", + .cra_priority = 3000, + .cra_module = THIS_MODULE, + .cra_ctxsize = sizeof(struct caam_rsa_ctx), + }, + } }; /* Public Key Cryptography module initialization handler */ @@ -1101,13 +1108,15 @@ int caam_pkc_init(struct device *ctrldev) if (!zero_buffer) return -ENOMEM; - err = crypto_register_akcipher(&caam_rsa); + err = crypto_register_akcipher(&caam_rsa.akcipher); + if (err) { kfree(zero_buffer); dev_warn(ctrldev, "%s alg registration failed\n", - caam_rsa.base.cra_driver_name); + caam_rsa.akcipher.base.cra_driver_name); } else { init_done = true; + caam_rsa.registered = true; dev_info(ctrldev, "caam pkc algorithms registered in /proc/crypto\n"); } @@ -1119,6 +1128,8 @@ void caam_pkc_exit(void) if (!init_done) return; + if (caam_rsa.registered) + crypto_unregister_akcipher(&caam_rsa.akcipher); + kfree(zero_buffer); - crypto_unregister_akcipher(&caam_rsa); }