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| author | Kirti Wankhede <kwankhede@nvidia.com> | 2016-11-17 02:16:29 +0530 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2016-11-17 08:33:20 -0700 |
| commit | a1e03e9bccd1402971213c4953ea59aab8142644 (patch) | |
| tree | 252255893823999cf0987e13cd263e036e4a260a /drivers/vfio | |
| parent | ef198aaa169c61ab357a5cea5a4ce1ee6aafa824 (diff) | |
| download | linux-0-day-a1e03e9bccd1402971213c4953ea59aab8142644.tar.gz linux-0-day-a1e03e9bccd1402971213c4953ea59aab8142644.tar.xz | |
vfio_platform: Updated to use vfio_set_irqs_validate_and_prepare()
Updated vfio_platform_common.c file to use
vfio_set_irqs_validate_and_prepare()
Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com>
Signed-off-by: Neo Jia <cjia@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio')
| -rw-r--r-- | drivers/vfio/platform/vfio_platform_common.c | 31 |
1 files changed, 8 insertions, 23 deletions
diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c index d781428307546..4c27f4be3c3d0 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); } |