From f8f76db1db369f3a130ac3fd33e2eee5f1610d9c Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 4 Feb 2010 10:23:02 -0800 Subject: [PATCH] libphy: add phy_find_first function Many drivers do this in them manually. Now they can use this function. Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/phy/phy_device.c | 16 ++++++++++++++++ include/linux/phy.h | 1 + 2 files changed, 17 insertions(+) diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index adbc0fded130..db1794546c56 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -276,6 +276,22 @@ int phy_device_register(struct phy_device *phydev) } EXPORT_SYMBOL(phy_device_register); +/** + * phy_find_first - finds the first PHY device on the bus + * @bus: the target MII bus + */ +struct phy_device *phy_find_first(struct mii_bus *bus) +{ + int addr; + + for (addr = 0; addr < PHY_MAX_ADDR; addr++) { + if (bus->phy_map[addr]) + return bus->phy_map[addr]; + } + return NULL; +} +EXPORT_SYMBOL(phy_find_first); + /** * phy_prepare_link - prepares the PHY layer to monitor link status * @phydev: target phy_device struct diff --git a/include/linux/phy.h b/include/linux/phy.h index 6a7eb402165d..14d7fdf6a90a 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -452,6 +452,7 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, u32 flags, phy_interface_t interface); struct phy_device * phy_attach(struct net_device *dev, const char *bus_id, u32 flags, phy_interface_t interface); +struct phy_device *phy_find_first(struct mii_bus *bus); int phy_connect_direct(struct net_device *dev, struct phy_device *phydev, void (*handler)(struct net_device *), u32 flags, phy_interface_t interface); -- 2.30.2