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net: cpsw: catch of_get_phy_mode failing and propagate error

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It's wrong if the device tree doesn't provide a phy-mode property for
the cpsw slaves as it is documented to be required in
Documentation/devicetree/bindings/net/cpsw.txt.

Anyhow it's nice to catch that problem, still more as it used to work
without this property up to commit 388367a5a9 (drivers: net: cpsw: use
cpsw-phy-sel driver to configure phy mode) which is in v3.13-rc1.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Uwe Kleine-König 2014-02-12 23:33:22 +01:00 committed by David S. Miller
parent 9b2b6a2d66
commit 89e101729b
1 changed files with 5 additions and 0 deletions
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5
drivers/net/ethernet/ti/cpsw.c
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@ -1896,6 +1896,11 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data,
memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
slave_data->phy_if = of_get_phy_mode(slave_node);
if (slave_data->phy_if < 0) {
pr_err("Missing or malformed slave[%d] phy-mode property\n",
i);
return slave_data->phy_if;
}
if (data->dual_emac) {
if (of_property_read_u32(slave_node, "dual_emac_res_vlan",