From: Dragos Tatulea <dtatulea@xxxxxxxxxx>
[ Upstream commit fe37efba475375caa2dbc71cb06f53f7086277ef ]
The referenced patch calls set_vq_affinity without checking if the op is
valid. This patch adds the check.
Fixes: 3dad56823b53 ("virtio-vdpa: Support interrupt affinity spreading mechanism")
Reviewed-by: Gal Pressman <gal@xxxxxxxxxx>
Signed-off-by: Dragos Tatulea <dtatulea@xxxxxxxxxx>
Message-Id: <20230504135053.2283816-1-dtatulea@xxxxxxxxxx>
Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
Reviewed-by: Feng Liu <feliu@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/virtio/virtio_vdpa.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
index eb6aee8c06b2c..989e2d7184ce4 100644
--- a/drivers/virtio/virtio_vdpa.c
+++ b/drivers/virtio/virtio_vdpa.c
@@ -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;
--
2.39.2
