Add mdiobus_get_bus() -- a function to get a MDIO bus by its number
Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
---
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
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