Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S941138AbcJZVc2 (ORCPT ); Wed, 26 Oct 2016 17:32:28 -0400 Received: from hqemgate15.nvidia.com ([216.228.121.64]:3899 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S941357AbcJZV3x (ORCPT ); Wed, 26 Oct 2016 17:29:53 -0400 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Wed, 26 Oct 2016 02:29:37 -0700 From: Kirti Wankhede To: , , , CC: , , , , , , Kirti Wankhede Subject: [PATCH v10 15/19] vfio_platform: Updated to use vfio_set_irqs_validate_and_prepare() Date: Thu, 27 Oct 2016 02:59:22 +0530 Message-ID: <1477517366-27871-16-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1477517366-27871-1-git-send-email-kwankhede@nvidia.com> References: <1477517366-27871-1-git-send-email-kwankhede@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1784 Lines: 61 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); } -- 2.7.0