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virtio_pci: fix the common cfg map size

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commit 061b39fdfe upstream.

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: 0b50cece0b ("virtio_pci: introduce helper to get/set queue reset")
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Message-Id: <20231010031120.81272-3-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xuan Zhuo
2023-10-10 11:11:18 +08:00
committed by Greg Kroah-Hartman
parent 86f467d358
commit 534487cc3e
1 changed files with 1 additions and 1 deletions
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2
drivers/virtio/virtio_pci_modern_dev.c
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@@ -282,7 +282,7 @@ int vp_modern_probe(struct virtio_pci_modern_device *mdev)
err = -EINVAL; err = -EINVAL;
mdev->common = vp_modern_map_capability(mdev, common, mdev->common = vp_modern_map_capability(mdev, common,
sizeof(struct virtio_pci_common_cfg), 4, sizeof(struct virtio_pci_common_cfg), 4,
0, sizeof(struct virtio_pci_common_cfg), 0, sizeof(struct virtio_pci_modern_common_cfg),
NULL, NULL); NULL, NULL);
if (!mdev->common) if (!mdev->common)
goto err_map_common; goto err_map_common;