[PATCH 7/9] net: phy: Track mii buses on a list
Sascha Hauer
s.hauer at pengutronix.de
Wed Dec 11 06:41:15 EST 2013
To be able to iterate over registered mii buses
Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
drivers/net/phy/mdio_bus.c | 6 ++++++
include/linux/phy.h | 7 +++++++
2 files changed, 13 insertions(+)
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 84c05ad..56cb9b2 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -25,6 +25,8 @@
#include <linux/phy.h>
#include <linux/err.h>
+LIST_HEAD(mii_bus_list);
+
/**
* mdiobus_register - bring up all the PHYs on a given bus and attach them to bus
* @bus: target mii_bus
@@ -57,6 +59,8 @@ int mdiobus_register(struct mii_bus *bus)
if (bus->reset)
bus->reset(bus);
+ list_add_tail(&bus->list, &mii_bus_list);
+
pr_info("%s: probed\n", dev_name(&bus->dev));
return 0;
}
@@ -71,6 +75,8 @@ void mdiobus_unregister(struct mii_bus *bus)
unregister_device(&bus->phy_map[i]->dev);
bus->phy_map[i] = NULL;
}
+
+ list_del(&bus->list);
}
EXPORT_SYMBOL(mdiobus_unregister);
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 19e4d20..5f3b33f 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -85,6 +85,8 @@ struct mii_bus {
/* PHY addresses to be ignored when probing */
u32 phy_mask;
+
+ struct list_head list;
};
#define to_mii_bus(d) container_of(d, struct mii_bus, dev)
@@ -92,6 +94,11 @@ int mdiobus_register(struct mii_bus *bus);
void mdiobus_unregister(struct mii_bus *bus);
struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr);
+extern struct list_head mii_bus_list;
+
+#define for_each_mii_bus(mii) \
+ list_for_each_entry(mii, &mii_bus_list, list)
+
/**
* mdiobus_read - Convenience function for reading a given MII mgmt register
* @bus: the mii_bus struct
--
1.8.5.1
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