[PATCH v2 5/8] mdio_bus: Add mdiobus_get_bus() function

[Andrey Smirnov]

Add mdiobus_get_bus() -- a function to get a MDIO bus by its number

Signed-off-by: Andrey Smirnov <andrew.smirnov at gmail.com>
---
 drivers/net/phy/mdio_bus.c | 19 +++++++++++++++++++
 include/linux/phy.h        |  2 ++
 2 files changed, 21 insertions(+)

diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 54d2f8f..b74b27e 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -187,6 +187,25 @@ struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr)
 }
 EXPORT_SYMBOL(mdiobus_scan);
 
+
+/**
+ *
+ * mdio_get_bus - get a MDIO bus from its busnum
+ *
+ * @param	busnum	the desired bus number
+ *
+ */
+struct mii_bus *mdiobus_get_bus(int busnum)
+{
+	struct mii_bus *mii;
+
+	for_each_mii_bus(mii)
+		if (mii->dev.id == busnum)
+			return mii;
+
+	return NULL;
+}
+
 /**
  * mdio_bus_match - determine if given PHY driver supports the given PHY device
  * @dev: target PHY device
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 58e69da..4e88936 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -114,6 +114,8 @@ int mdiobus_detect(struct device_d *dev);
 #define for_each_mii_bus(mii) \
 	list_for_each_entry(mii, &mii_bus_list, list)
 
+struct mii_bus *mdiobus_get_bus(int busnum);
+
 /**
  * mdiobus_read - Convenience function for reading a given MII mgmt register
  * @bus: the mii_bus struct
-- 
2.5.0