From patchwork Mon Oct 17 21:22:09 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kirti Wankhede X-Patchwork-Id: 9380585 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7C0FE60CDC for ; Mon, 17 Oct 2016 21:22:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 65FE128B81 for ; Mon, 17 Oct 2016 21:22:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 58D56290EA; Mon, 17 Oct 2016 21:22:03 +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=-6.9 required=2.0 tests=BAYES_00,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 E4E25290A6 for ; Mon, 17 Oct 2016 21:22:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1034058AbcJQVVr (ORCPT ); Mon, 17 Oct 2016 17:21:47 -0400 Received: from hqemgate16.nvidia.com ([216.228.121.65]:1954 "EHLO hqemgate16.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753388AbcJQVVm (ORCPT ); Mon, 17 Oct 2016 17:21:42 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate16.nvidia.com id ; Mon, 17 Oct 2016 14:18:46 -0700 Received: from HQMAIL101.nvidia.com ([172.20.13.39]) by hqpgpgate101.nvidia.com (PGP Universal service); Mon, 17 Oct 2016 14:21:37 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Mon, 17 Oct 2016 14:21:37 -0700 Received: from HQMAIL103.nvidia.com (172.20.187.11) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Mon, 17 Oct 2016 21:21:38 +0000 Received: from kwankhede-dev.nvidia.com (172.20.13.39) by HQMAIL103.nvidia.com (172.20.187.11) with Microsoft SMTP Server (TLS) id 15.0.1210.3 via Frontend Transport; Mon, 17 Oct 2016 21:21:35 +0000 From: Kirti Wankhede To: , , , CC: , , , , , , Kirti Wankhede Subject: [PATCH v9 09/12] vfio_platform: Updated to use vfio_set_irqs_validate_and_prepare() Date: Tue, 18 Oct 2016 02:52:09 +0530 Message-ID: <1476739332-4911-10-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1476739332-4911-1-git-send-email-kwankhede@nvidia.com> References: <1476739332-4911-1-git-send-email-kwankhede@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Updated vfio_platform_common.c file to use vfio_set_irqs_validate_and_prepare() Signed-off-by: Kirti Wankhede Signed-off-by: Neo Jia Change-Id: Id87cd6b78ae901610b39bf957974baa6f40cd7b0 --- drivers/vfio/platform/vfio_platform_common.c | 31 +++++++--------------------- 1 file changed, 8 insertions(+), 23 deletions(-) diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c index d78142830754..4c27f4be3c3d 100644 --- a/drivers/vfio/platform/vfio_platform_common.c +++ b/drivers/vfio/platform/vfio_platform_common.c @@ -364,36 +364,21 @@ static long vfio_platform_ioctl(void *device_data, struct vfio_irq_set hdr; u8 *data = NULL; int ret = 0; + size_t data_size = 0; minsz = offsetofend(struct vfio_irq_set, count); if (copy_from_user(&hdr, (void __user *)arg, minsz)) return -EFAULT; - if (hdr.argsz < minsz) - return -EINVAL; - - if (hdr.index >= vdev->num_irqs) - return -EINVAL; - - if (hdr.flags & ~(VFIO_IRQ_SET_DATA_TYPE_MASK | - VFIO_IRQ_SET_ACTION_TYPE_MASK)) - return -EINVAL; - - if (!(hdr.flags & VFIO_IRQ_SET_DATA_NONE)) { - size_t size; - - if (hdr.flags & VFIO_IRQ_SET_DATA_BOOL) - size = sizeof(uint8_t); - else if (hdr.flags & VFIO_IRQ_SET_DATA_EVENTFD) - size = sizeof(int32_t); - else - return -EINVAL; - - if (hdr.argsz - minsz < size) - return -EINVAL; + ret = vfio_set_irqs_validate_and_prepare(&hdr, vdev->num_irqs, + vdev->num_irqs, &data_size); + if (ret) + return ret; - data = memdup_user((void __user *)(arg + minsz), size); + if (data_size) { + data = memdup_user((void __user *)(arg + minsz), + data_size); if (IS_ERR(data)) return PTR_ERR(data); }