diff options
Diffstat (limited to 'drivers/net/phy/mdio-mux.c')
| -rw-r--r-- | drivers/net/phy/mdio-mux.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/drivers/net/phy/mdio-mux.c b/drivers/net/phy/mdio-mux.c index 5c81d6faf304..963838d4fac1 100644 --- a/drivers/net/phy/mdio-mux.c +++ b/drivers/net/phy/mdio-mux.c @@ -89,7 +89,8 @@ static int parent_count; int mdio_mux_init(struct device *dev, int (*switch_fn)(int cur, int desired, void *data), void **mux_handle, - void *data) + void *data, + struct mii_bus *mux_bus) { struct device_node *parent_bus_node; struct device_node *child_bus_node; @@ -101,10 +102,22 @@ int mdio_mux_init(struct device *dev, if (!dev->of_node) return -ENODEV; - parent_bus_node = of_parse_phandle(dev->of_node, "mdio-parent-bus", 0); + if (!mux_bus) { + parent_bus_node = of_parse_phandle(dev->of_node, + "mdio-parent-bus", 0); - if (!parent_bus_node) - return -ENODEV; + if (!parent_bus_node) + return -ENODEV; + + parent_bus = of_mdio_find_bus(parent_bus_node); + if (!parent_bus) { + ret_val = -EPROBE_DEFER; + goto err_parent_bus; + } + } else { + parent_bus_node = NULL; + parent_bus = mux_bus; + } pb = devm_kzalloc(dev, sizeof(*pb), GFP_KERNEL); if (pb == NULL) { @@ -112,11 +125,6 @@ int mdio_mux_init(struct device *dev, goto err_parent_bus; } - parent_bus = of_mdio_find_bus(parent_bus_node); - if (parent_bus == NULL) { - ret_val = -EPROBE_DEFER; - goto err_parent_bus; - } pb->switch_data = data; pb->switch_fn = switch_fn; |