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virtio_pci_modern: __force cast the notify mapping

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When switching virtio_pci_modern to use a helper for mappings we lost an
__iomem tag. We should restore it.

However, virtio_pci_modern is playing tricks by hiding an iomem pointer
in a regular vq->priv pointer. Which is okay as long as it's
all contained within a single file, but we need to __force cast
the value otherwise we'll get sparse warnings.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 7dca6c0ea96b ("virtio-pci library: switch to use vp_modern_map_vq_notify()")
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2021-05-04 04:12:10 -04:00
parent 5619003173
commit 0f8a0b0b09
1 changed files with 1 additions and 1 deletions
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2
drivers/virtio/virtio_pci_modern.c
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@ -224,7 +224,7 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev,
virtqueue_get_avail_addr(vq),
virtqueue_get_used_addr(vq));
vq->priv = vp_modern_map_vq_notify(mdev, index, NULL);
vq->priv = (void __force *)vp_modern_map_vq_notify(mdev, index, NULL);
if (!vq->priv) {
err = -ENOMEM;
goto err_map_notify;