From patchwork Fri Jul 21 08:54:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kaiser X-Patchwork-Id: 705466 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10C15EB64DD for ; Fri, 21 Jul 2023 08:57:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230329AbjGUI47 (ORCPT ); Fri, 21 Jul 2023 04:56:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56334 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230290AbjGUI4u (ORCPT ); Fri, 21 Jul 2023 04:56:50 -0400 Received: from viti.kaiser.cx (viti.kaiser.cx [IPv6:2a01:238:43fe:e600:cd0c:bd4a:7a3:8e9f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B2032D76; Fri, 21 Jul 2023 01:56:50 -0700 (PDT) Received: from [185.206.209.215] (helo=martin-debian-2.paytec.ch) by viti.kaiser.cx with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1qMlwO-0001Cf-Lw; Fri, 21 Jul 2023 10:56:48 +0200 From: Martin Kaiser To: Herbert Xu Cc: linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Martin Kaiser Subject: [PATCH 1/2] hwrng: cn10k - delete empty remove function Date: Fri, 21 Jul 2023 10:54:43 +0200 Message-Id: <20230721085444.496863-2-martin@kaiser.cx> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230721085444.496863-1-martin@kaiser.cx> References: <20230721085444.496863-1-martin@kaiser.cx> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org The remove function is empty, we can delete it. It's ok for a PCI driver to have no remove function. Signed-off-by: Martin Kaiser --- drivers/char/hw_random/cn10k-rng.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/char/hw_random/cn10k-rng.c b/drivers/char/hw_random/cn10k-rng.c index 0cd7e1a8e499..794ec77feb2c 100644 --- a/drivers/char/hw_random/cn10k-rng.c +++ b/drivers/char/hw_random/cn10k-rng.c @@ -213,11 +213,6 @@ static int cn10k_rng_probe(struct pci_dev *pdev, const struct pci_device_id *id) return 0; } -static void cn10k_rng_remove(struct pci_dev *pdev) -{ - /* Nothing to do */ -} - static const struct pci_device_id cn10k_rng_id_table[] = { { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, 0xA098) }, /* RNG PF */ {0,}, @@ -229,7 +224,6 @@ static struct pci_driver cn10k_rng_driver = { .name = "cn10k_rng", .id_table = cn10k_rng_id_table, .probe = cn10k_rng_probe, - .remove = cn10k_rng_remove, }; module_pci_driver(cn10k_rng_driver); From patchwork Fri Jul 21 08:54:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kaiser X-Patchwork-Id: 705047 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 61201C001DC for ; Fri, 21 Jul 2023 08:57:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231186AbjGUI5E (ORCPT ); Fri, 21 Jul 2023 04:57:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56492 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229940AbjGUI46 (ORCPT ); Fri, 21 Jul 2023 04:56:58 -0400 Received: from viti.kaiser.cx (viti.kaiser.cx [IPv6:2a01:238:43fe:e600:cd0c:bd4a:7a3:8e9f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AA9CC2D7E; Fri, 21 Jul 2023 01:56:51 -0700 (PDT) Received: from [185.206.209.215] (helo=martin-debian-2.paytec.ch) by viti.kaiser.cx with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1qMlwQ-0001Cf-AK; Fri, 21 Jul 2023 10:56:50 +0200 From: Martin Kaiser To: Herbert Xu Cc: linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Martin Kaiser Subject: [PATCH 2/2] hwrng: cn10k - use dev_err_probe Date: Fri, 21 Jul 2023 10:54:44 +0200 Message-Id: <20230721085444.496863-3-martin@kaiser.cx> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230721085444.496863-1-martin@kaiser.cx> References: <20230721085444.496863-1-martin@kaiser.cx> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Use dev_err_probe in error paths of the probe function, making the code a tiny bit simpler. Signed-off-by: Martin Kaiser --- drivers/char/hw_random/cn10k-rng.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/char/hw_random/cn10k-rng.c b/drivers/char/hw_random/cn10k-rng.c index 794ec77feb2c..31935316a160 100644 --- a/drivers/char/hw_random/cn10k-rng.c +++ b/drivers/char/hw_random/cn10k-rng.c @@ -187,10 +187,8 @@ static int cn10k_rng_probe(struct pci_dev *pdev, const struct pci_device_id *id) pci_set_drvdata(pdev, rng); rng->reg_base = pcim_iomap(pdev, 0, 0); - if (!rng->reg_base) { - dev_err(&pdev->dev, "Error while mapping CSRs, exiting\n"); - return -ENOMEM; - } + if (!rng->reg_base) + return dev_err_probe(&pdev->dev, -ENOMEM, "Error while mapping CSRs, exiting\n"); rng->ops.name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "cn10k-rng-%s", dev_name(&pdev->dev)); @@ -205,10 +203,8 @@ static int cn10k_rng_probe(struct pci_dev *pdev, const struct pci_device_id *id) reset_rng_health_state(rng); err = devm_hwrng_register(&pdev->dev, &rng->ops); - if (err) { - dev_err(&pdev->dev, "Could not register hwrng device.\n"); - return err; - } + if (err) + return dev_err_probe(&pdev->dev, err, "Could not register hwrng device.\n"); return 0; }