From dce33dc5a6ba5f7fcbab4d7e92cc68c756a1f714 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Mon, 15 Jul 2013 17:34:09 +0200 Subject: [PATCH 081/203] net: phy: call mdiobus_scan() after adding a fixed PHY The fixed_phy_add() function allows to register a fixed PHY. However, when this function gets called *after* fixed_mdio_bus_init() (which gets called at the module_init stage), then the fixed PHY is not registered into the phylib. In order to address this, we add a call to mdiobus_scan() in fixed_phy_add() to ensure that the PHY indeed gets registered into the phylib, even if the fixed_phy_add() is called after fixed_mdio_bus_init(). This is needed because until now, the only code that was calling the fixed_add_phy() function was PowerPC-specific platform code, which could ensure that such fixed PHYs get registered before fixed_mdio_bus_init() is called. However, with the new of_phy_register_fixed_link() function, device drivers can parse their 'fixed-link' property and register a fixed PHY at ->probe() time, which may happen after fixed_mdio_bus_init() is called. Signed-off-by: Thomas Petazzoni --- drivers/net/phy/fixed.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/net/phy/fixed.c +++ b/drivers/net/phy/fixed.c @@ -195,6 +195,8 @@ int fixed_phy_add(unsigned int irq, int list_add_tail(&fp->node, &fmb->phys); + mdiobus_scan(fmb->mii_bus, phy_id); + return 0; err_regs: