[PATCH V3 08/19] virtio-pci-modern: introduce vp_modern_generation()
From: Jason Wang <jasowang@redhat.com>
Date: 2021-01-04 06:57:19
Also in:
virtualization
Subsystem:
the rest, virtio core · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang
This patch introduces vp_modern_generation() to get device generation. Signed-off-by: Jason Wang <jasowang@redhat.com> --- drivers/virtio/virtio_pci_modern.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c
index cb14fc334a9c..a128e5814045 100644
--- a/drivers/virtio/virtio_pci_modern.c
+++ b/drivers/virtio/virtio_pci_modern.c@@ -289,15 +289,26 @@ static void vp_set(struct virtio_device *vdev, unsigned offset, } } -static u32 vp_generation(struct virtio_device *vdev) +/* + * vp_modern_generation - get the device genreation + * @mdev: the modern virtio-pci device + * + * Returns the genreation read from device + */ +static u32 vp_modern_generation(struct virtio_pci_modern_device *mdev) { - struct virtio_pci_device *vp_dev = to_vp_device(vdev); - struct virtio_pci_modern_device *mdev = &vp_dev->mdev; struct virtio_pci_common_cfg __iomem *cfg = mdev->common; return vp_ioread8(&cfg->config_generation); } +static u32 vp_generation(struct virtio_device *vdev) +{ + struct virtio_pci_device *vp_dev = to_vp_device(vdev); + + return vp_modern_generation(&vp_dev->mdev); +} + /* * vp_modern_get_status - get the device status * @mdev: the modern virtio-pci device
--
2.25.1