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net: dsa: variable number of ports

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Change the ports[DSA_MAX_PORTS] array of the dsa_switch structure for a
zero-length array, allocated at the same time as the dsa_switch
structure itself. A dsa_switch_alloc() helper is provided for that.

This commit brings no functional change yet since we pass DSA_MAX_PORTS
as the number of ports for the moment. Future patches can update the DSA
drivers separately to support dynamic number of ports.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot
2017-01-27 15:29:36 -05:00
committed by David S. Miller
parent 1f5d492a34
commit a0c02161ec
6 changed files with 29 additions and 11 deletions
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3
drivers/net/dsa/qca8k.c
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@@ -954,12 +954,11 @@ qca8k_sw_probe(struct mdio_device *mdiodev)
if (id != QCA8K_ID_QCA8337)
return -ENODEV;
priv->ds = devm_kzalloc(&mdiodev->dev, sizeof(*priv->ds), GFP_KERNEL);
priv->ds = dsa_switch_alloc(&mdiodev->dev, DSA_MAX_PORTS);
if (!priv->ds)
return -ENOMEM;
priv->ds->priv = priv;
priv->ds->dev = &mdiodev->dev;
priv->ds->ops = &qca8k_switch_ops;
mutex_init(&priv->reg_mutex);
dev_set_drvdata(&mdiodev->dev, priv);