From patchwork Sat Oct 22 01:17:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "yekai (A)" X-Patchwork-Id: 13015678 X-Patchwork-Delegate: herbert@gondor.apana.org.au 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 A3481C433FE for ; Sat, 22 Oct 2022 01:23:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229832AbiJVBXl (ORCPT ); Fri, 21 Oct 2022 21:23:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35492 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229793AbiJVBXj (ORCPT ); Fri, 21 Oct 2022 21:23:39 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 22ED32B3200; Fri, 21 Oct 2022 18:23:38 -0700 (PDT) Received: from dggpeml500025.china.huawei.com (unknown [172.30.72.53]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4MvNmt20l4zpVfr; Sat, 22 Oct 2022 09:20:14 +0800 (CST) Received: from dggpeml100012.china.huawei.com (7.185.36.121) by dggpeml500025.china.huawei.com (7.185.36.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Sat, 22 Oct 2022 09:23:35 +0800 Received: from huawei.com (10.67.165.24) by dggpeml100012.china.huawei.com (7.185.36.121) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Sat, 22 Oct 2022 09:23:35 +0800 From: Kai Ye To: CC: , , Subject: [PATCH v3 2/3] crypto: hisilicon/qm - add pci bdf number check Date: Sat, 22 Oct 2022 01:17:45 +0000 Message-ID: <20221022011746.27197-3-yekai13@huawei.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221022011746.27197-1-yekai13@huawei.com> References: <20221022011746.27197-1-yekai13@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.24] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggpeml100012.china.huawei.com (7.185.36.121) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org The pci bdf number check is added for qos written by using the pci api. Directly get the devfn by pci_dev, so delete some redundant code. And use the kstrtoul instead of sscanf to simplify code. Signed-off-by: Kai Ye --- drivers/crypto/hisilicon/qm.c | 37 ++++++++++++----------------------- 1 file changed, 12 insertions(+), 25 deletions(-) diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index 5d79e9f0e7e1..80eeb966cf89 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -4589,49 +4589,36 @@ static ssize_t qm_algqos_read(struct file *filp, char __user *buf, return ret; } -static ssize_t qm_qos_value_init(const char *buf, unsigned long *val) -{ - int buflen = strlen(buf); - int ret, i; - - for (i = 0; i < buflen; i++) { - if (!isdigit(buf[i])) - return -EINVAL; - } - - ret = sscanf(buf, "%lu", val); - if (ret != QM_QOS_VAL_NUM) - return -EINVAL; - - return 0; -} - static ssize_t qm_get_qos_value(struct hisi_qm *qm, const char *buf, unsigned long *val, unsigned int *fun_index) { + struct bus_type *bus_type = qm->pdev->dev.bus; char tbuf_bdf[QM_DBG_READ_LEN] = {0}; char val_buf[QM_DBG_READ_LEN] = {0}; - u32 tmp1, device, function; - int ret, bus; + struct pci_dev *pdev; + struct device *dev; + int ret; ret = sscanf(buf, "%s %s", tbuf_bdf, val_buf); if (ret != QM_QOS_PARAM_NUM) return -EINVAL; - ret = qm_qos_value_init(val_buf, val); + ret = kstrtoul(val_buf, 10, val); if (ret || *val == 0 || *val > QM_QOS_MAX_VAL) { pci_err(qm->pdev, "input qos value is error, please set 1~1000!\n"); return -EINVAL; } - ret = sscanf(tbuf_bdf, "%u:%x:%u.%u", &tmp1, &bus, &device, &function); - if (ret != QM_QOS_BDF_PARAM_NUM) { - pci_err(qm->pdev, "input pci bdf value is error!\n"); - return -EINVAL; + dev = bus_find_device_by_name(bus_type, NULL, tbuf_bdf); + if (!dev) { + pci_err(qm->pdev, "input pci bdf number is error!\n"); + return -ENODEV; } - *fun_index = PCI_DEVFN(device, function); + pdev = container_of(dev, struct pci_dev, dev); + + *fun_index = pdev->devfn; return 0; }