Commit 061b39fd authored by Xuan Zhuo's avatar Xuan Zhuo Committed by Michael S. Tsirkin
Browse files

virtio_pci: fix the common cfg map size 



The function vp_modern_map_capability() takes the size parameter,
which corresponds to the size of virtio_pci_common_cfg. As a result,
this indicates the size of memory area to map.

Now the size is the size of virtio_pci_common_cfg, but some feature(such
as the _F_RING_RESET) needs the virtio_pci_modern_common_cfg, so this
commit changes the size to the size of virtio_pci_modern_common_cfg.

Cc: stable@vger.kernel.org
Fixes: 0b50cece ("virtio_pci: introduce helper to get/set queue reset")
Signed-off-by: default avatarXuan Zhuo <xuanzhuo@linux.alibaba.com>
Message-Id: <20231010031120.81272-3-xuanzhuo@linux.alibaba.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Acked-by: default avatarJason Wang <jasowang@redhat.com>
parent fa2e6947

drivers/virtio/virtio_pci_modern_dev.c

+1 −1
Original line number Diff line number Diff line
@@ -291,7 +291,7 @@ int vp_modern_probe(struct virtio_pci_modern_device *mdev) 
	err = -EINVAL;

	mdev->common = vp_modern_map_capability(mdev, common,

				      sizeof(struct virtio_pci_common_cfg), 4,

				      0, sizeof(struct virtio_pci_common_cfg),

				      0, sizeof(struct virtio_pci_modern_common_cfg),

				      NULL, NULL);

	if (!mdev->common)

		goto err_map_common;