diff options
| author | Feng Liu <feliu@nvidia.com> | 2023-07-19 11:45:50 -0400 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-08-10 15:24:28 -0400 |
| commit | 13f3efaca024e16ccfab0e8b2cf29d66489d8d54 (patch) | |
| tree | 930f23b9e9d31800cb22047e0d61bf07497f3ce5 /drivers/virtio/virtio_pci_common.c | |
| parent | 8d4bdf11f096e5b343ee0f9aaa8c262dc16d2e1e (diff) | |
virtio-pci: Fix legacy device flag setting error in probe
The 'is_legacy' flag is used to differentiate between legacy vs modern
device. Currently, it is based on the value of vp_dev->ldev.ioaddr.
However, due to the shared memory of the union between struct
virtio_pci_legacy_device and struct virtio_pci_modern_device, when
virtio_pci_modern_probe modifies the content of struct
virtio_pci_modern_device, it affects the content of struct
virtio_pci_legacy_device, and ldev.ioaddr is no longer zero, causing
the 'is_legacy' flag to be set as true. To resolve issue, when legacy
device is probed, mark 'is_legacy' as true, when modern device is
probed, keep 'is_legacy' as false.
Fixes: 4f0fc22534e3 ("virtio_pci: Optimize virtio_pci_device structure size")
Signed-off-by: Feng Liu <feliu@nvidia.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Message-Id: <20230719154550.79536-1-feliu@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'drivers/virtio/virtio_pci_common.c')
| -rw-r--r-- | drivers/virtio/virtio_pci_common.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c index a6c86f916dbd..c2524a7207cf 100644 --- a/drivers/virtio/virtio_pci_common.c +++ b/drivers/virtio/virtio_pci_common.c @@ -557,8 +557,6 @@ static int virtio_pci_probe(struct pci_dev *pci_dev, pci_set_master(pci_dev); - vp_dev->is_legacy = vp_dev->ldev.ioaddr ? true : false; - rc = register_virtio_device(&vp_dev->vdev); reg_dev = vp_dev; if (rc) |