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virtio-vdpa: Fix unchecked call to NULL set_vq_affinity

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The referenced patch calls set_vq_affinity without checking if the op is
valid. This patch adds the check.

Fixes: 3dad56823b ("virtio-vdpa: Support interrupt affinity spreading mechanism")
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Message-Id: <20230504135053.2283816-1-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Feng Liu <feliu@nvidia.com>
This commit is contained in:
Dragos Tatulea 2023-05-04 16:50:52 +03:00 committed by Michael S. Tsirkin
parent ef9da01c12
commit fe37efba47
1 changed files with 3 additions and 1 deletions
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4
drivers/virtio/virtio_vdpa.c
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@ -385,7 +385,9 @@ static int virtio_vdpa_find_vqs(struct virtio_device *vdev, unsigned int nvqs,
err = PTR_ERR(vqs[i]);
goto err_setup_vq;
}
ops->set_vq_affinity(vdpa, i, &masks[i]);
if (ops->set_vq_affinity)
ops->set_vq_affinity(vdpa, i, &masks[i]);
}
cb.callback = virtio_vdpa_config_cb;