Hi,
On 16/11/2016 21:46, Kirti Wankhede wrote:
> Update msix_sparse_mmap_cap() to use vfio_info_add_capability()
> Update region type capability to use vfio_info_add_capability()
>
> Signed-off-by: Kirti Wankhede <kwankhede@xxxxxxxxxx>
> Signed-off-by: Neo Jia <cjia@xxxxxxxxxx>
> Change-Id: I52bb28c7875a6da5a79ddad1843e6088aff58a45
> ---
> drivers/vfio/pci/vfio_pci.c | 49 ++++++++++++++++++---------------------------
> 1 file changed, 19 insertions(+), 30 deletions(-)
>
> diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
> index 031bc08d000d..03b5434f4d5b 100644
> --- a/drivers/vfio/pci/vfio_pci.c
> +++ b/drivers/vfio/pci/vfio_pci.c
> @@ -558,10 +558,9 @@ static int vfio_pci_for_each_slot_or_bus(struct pci_dev *pdev,
> static int msix_sparse_mmap_cap(struct vfio_pci_device *vdev,
> struct vfio_info_cap *caps)
> {
> - struct vfio_info_cap_header *header;
> struct vfio_region_info_cap_sparse_mmap *sparse;
> size_t end, size;
> - int nr_areas = 2, i = 0;
> + int nr_areas = 2, i = 0, ret;
>
> end = pci_resource_len(vdev->pdev, vdev->msix_bar);
>
> @@ -572,13 +571,10 @@ static int msix_sparse_mmap_cap(struct vfio_pci_device *vdev,
>
> size = sizeof(*sparse) + (nr_areas * sizeof(*sparse->areas));
>
> - header = vfio_info_cap_add(caps, size,
> - VFIO_REGION_INFO_CAP_SPARSE_MMAP, 1);
> - if (IS_ERR(header))
> - return PTR_ERR(header);
> + sparse = kzalloc(size, GFP_KERNEL);
> + if (!sparse)
> + return -ENOMEM;
>
> - sparse = container_of(header,
> - struct vfio_region_info_cap_sparse_mmap, header);
> sparse->nr_areas = nr_areas;
>
> if (vdev->msix_offset & PAGE_MASK) {
> @@ -594,26 +590,11 @@ static int msix_sparse_mmap_cap(struct vfio_pci_device *vdev,
> i++;
> }
>
> - return 0;
> -}
> -
> -static int region_type_cap(struct vfio_pci_device *vdev,
> - struct vfio_info_cap *caps,
> - unsigned int type, unsigned int subtype)
> -{
> - struct vfio_info_cap_header *header;
> - struct vfio_region_info_cap_type *cap;
> -
> - header = vfio_info_cap_add(caps, sizeof(*cap),
> - VFIO_REGION_INFO_CAP_TYPE, 1);
> - if (IS_ERR(header))
> - return PTR_ERR(header);
> -
> - cap = container_of(header, struct vfio_region_info_cap_type, header);
> - cap->type = type;
> - cap->subtype = subtype;
> + ret = vfio_info_add_capability(caps, VFIO_REGION_INFO_CAP_SPARSE_MMAP,
> + sparse);
> + kfree(sparse);
>
> - return 0;
> + return ret;
> }
>
> int vfio_pci_register_dev_region(struct vfio_pci_device *vdev,
> @@ -752,6 +733,9 @@ static long vfio_pci_ioctl(void *device_data,
>
> break;
> default:
> + {
> + struct vfio_region_info_cap_type cap_type;
> +
> if (info.index >=
> VFIO_PCI_NUM_REGIONS + vdev->num_regions)
> return -EINVAL;
> @@ -762,11 +746,16 @@ static long vfio_pci_ioctl(void *device_data,
> info.size = vdev->region[i].size;
> info.flags = vdev->region[i].flags;
>
> - ret = region_type_cap(vdev, &caps,
> - vdev->region[i].type,
> - vdev->region[i].subtype);
> + cap_type.type = vdev->region[i].type;
> + cap_type.subtype = vdev->region[i].subtype;
> +
> + ret = vfio_info_add_capability(&caps,
> + VFIO_REGION_INFO_CAP_TYPE,
> + &cap_type);
> if (ret)
> return ret;
> +
nit: spare empty line
Reviewed-by: Eric Auger <eric.auger@xxxxxxxxxx>
Eric
> + }
> }
>
> if (caps.size) {
>
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