Messages in this thread Patch in this message |  | | From | Sebastian Hesselbarth <> | Subject | [PATCH v1 5/6] net: phy: suspend unused PHYs on mdio_bus in late_initcall | Date | Sun, 8 Dec 2013 15:40:30 +0100 |
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Since phy_attach ensures PHYs are resumed, we can now suspend all PHYs that have no attached netdev after initcalls.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Mugunthan V N <mugunthanvnm@ti.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> --- Changelog: RFCv2->v1: - simplify phydev reference (Suggested by Sergei Shtylyov)
Cc: David Miller <davem@davemloft.net> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Mugunthan V N <mugunthanvnm@ti.com> Cc: netdev@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/net/phy/mdio_bus.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 5617876..9ccf9c6 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -320,6 +320,29 @@ static int mdio_bus_match(struct device *dev, struct device_driver *drv) (phydev->phy_id & phydrv->phy_id_mask)); } +static int mdio_bus_suspend_unused(struct device *busdev, void *data) +{ + struct mii_bus *bus = to_mii_bus(busdev); + int i; + + for (i = 0; i < PHY_MAX_ADDR; i++) { + if (!bus->phy_map[i]) + continue; + + if (!bus->phy_map[i]->attached_dev) + phy_suspend(bus->phy_map[i]); + } + + return 0; +} + +static int mdio_bus_class_suspend_unused(void) +{ + return class_for_each_device(&mdio_bus_class, NULL, NULL, + mdio_bus_suspend_unused); +} +late_initcall_sync(mdio_bus_class_suspend_unused); + #ifdef CONFIG_PM static bool mdio_bus_phy_may_suspend(struct phy_device *phydev) -- 1.8.4.rc3
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