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net: mdio-gpio: Allow for unspecified bus id 

When the bus id was supplied via a struct platform_device, the driver wasn't
handling -1 to mean an unspecified id of the only instance of this driver,
as the platform spec requires.

Signed-off-by: Bert Vermeulen <bert@biot.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Bert Vermeulen 2015-05-08 16:18:49 +02:00 committed by David S. Miller
parent fbf33a2802
commit 7c0c826828
1 changed files with 4 additions and 1 deletions
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5
drivers/net/phy/mdio-gpio.c
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@ -168,7 +168,10 @@ static struct mii_bus *mdio_gpio_bus_init(struct device *dev,
if (!new_bus->irq[i])
new_bus->irq[i] = PHY_POLL;
snprintf(new_bus->id, MII_BUS_ID_SIZE, "gpio-%x", bus_id);
if (bus_id != -1)
snprintf(new_bus->id, MII_BUS_ID_SIZE, "gpio-%x", bus_id);
else
strncpy(new_bus->id, "gpio", MII_BUS_ID_SIZE);
if (devm_gpio_request(dev, bitbang->mdc, "mdc"))
goto out_free_bus;