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mlxbf-tmfifo: sparse tags for config access 

mlxbf-tmfifo accesses config space using native types -
which works for it since the legacy virtio native types.

This will break if it ever needs to support modern virtio,
so with new tags previously introduced for virtio net config,
sparse now warns for this in drivers.

Since this is a legacy only device, fix it up using
virtio_legacy_is_little_endian for now.

No functional changes.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
This commit is contained in:
Michael S. Tsirkin 2020-07-12 10:56:34 -04:00
parent 4a04cfb0eb
commit 03bea764bf
1 changed files with 10 additions and 3 deletions
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13
drivers/platform/mellanox/mlxbf-tmfifo.c
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@ -625,7 +625,10 @@ static void mlxbf_tmfifo_rxtx_header(struct mlxbf_tmfifo_vring *vring,
vdev_id = VIRTIO_ID_NET;
hdr_len = sizeof(struct virtio_net_hdr);
config = &fifo->vdev[vdev_id]->config.net;
if (ntohs(hdr.len) > config->mtu +
/* A legacy-only interface for now. */
if (ntohs(hdr.len) >
__virtio16_to_cpu(virtio_legacy_is_little_endian(),
config->mtu) +
MLXBF_TMFIFO_NET_L2_OVERHEAD)
return;
} else {
@ -1231,8 +1234,12 @@ static int mlxbf_tmfifo_probe(struct platform_device *pdev)
/* Create the network vdev. */
memset(&net_config, 0, sizeof(net_config));
net_config.mtu = ETH_DATA_LEN;
net_config.status = VIRTIO_NET_S_LINK_UP;
/* A legacy-only interface for now. */
net_config.mtu = __cpu_to_virtio16(virtio_legacy_is_little_endian(),
ETH_DATA_LEN);
net_config.status = __cpu_to_virtio16(virtio_legacy_is_little_endian(),
VIRTIO_NET_S_LINK_UP);
mlxbf_tmfifo_get_cfg_mac(net_config.mac);
rc = mlxbf_tmfifo_create_vdev(dev, fifo, VIRTIO_ID_NET,
MLXBF_TMFIFO_NET_FEATURES, &net_config,