diff options
author | Daniel Mack <zonque@gmail.com> | 2014-05-24 09:34:25 +0200 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2014-05-29 15:23:18 -0700 |
commit | 8f8382888cbaf6de13046437d41a1c3d1394d51f (patch) | |
tree | c55be762ab32ea47eedfe2b1dfe27a08ea4640d6 /drivers/of | |
parent | 6623b4194459c07859d3e3196c3994fa7be5b88e (diff) | |
download | linux-8f8382888cbaf6de13046437d41a1c3d1394d51f.tar.gz linux-8f8382888cbaf6de13046437d41a1c3d1394d51f.tar.xz |
net: of_mdio: factor out code to parse a phy's 'reg' property
Factor out some logic into of_mdio_parse_addr() so it can be reused
later. While at it, use of_property_read_u32() rather than open-coding
the same logic again.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/of')
-rw-r--r-- | drivers/of/of_mdio.c | 35 |
1 files changed, 23 insertions, 12 deletions
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index 7c6e277cdd1f..731d3d9052d7 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -88,6 +88,27 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio, struct device_node *chi return 0; } +static int of_mdio_parse_addr(struct device *dev, const struct device_node *np) +{ + u32 addr; + int ret; + + ret = of_property_read_u32(np, "reg", &addr); + if (ret < 0) { + dev_err(dev, "%s has invalid PHY address\n", np->full_name); + return ret; + } + + /* A PHY must have a reg property in the range [0-31] */ + if (addr >= PHY_MAX_ADDR) { + dev_err(dev, "%s PHY address %i is too large\n", + np->full_name, addr); + return -EINVAL; + } + + return addr; +} + /** * of_mdiobus_register - Register mii_bus and create PHYs from the device tree * @mdio: pointer to mii_bus structure @@ -122,19 +143,9 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np) /* Loop over the child nodes and register a phy_device for each one */ for_each_available_child_of_node(np, child) { - /* A PHY must have a reg property in the range [0-31] */ - paddr = of_get_property(child, "reg", &len); - if (!paddr || len < sizeof(*paddr)) { + addr = of_mdio_parse_addr(&mdio->dev, child); + if (addr < 0) { scanphys = true; - dev_err(&mdio->dev, "%s has invalid PHY address\n", - child->full_name); - continue; - } - - addr = be32_to_cpup(paddr); - if (addr >= PHY_MAX_ADDR) { - dev_err(&mdio->dev, "%s PHY address %i is too large\n", - child->full_name, addr); continue; } |