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author | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2020-06-29 14:03:45 +0200 |
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committer | David S. Miller <davem@davemloft.net> | 2020-06-30 15:57:34 -0700 |
commit | 14eeb6e086d6b9004c600e5f0f62bacb458ecfba (patch) | |
tree | c50a619917df6ac612b4f457bbe1d53c75c337cc /drivers/net/phy/mdio_devres.c | |
parent | a0bd96f5aed2108505386733abe76f37362c2f50 (diff) | |
download | linux-stable-14eeb6e086d6b9004c600e5f0f62bacb458ecfba.tar.gz linux-stable-14eeb6e086d6b9004c600e5f0f62bacb458ecfba.tar.bz2 linux-stable-14eeb6e086d6b9004c600e5f0f62bacb458ecfba.zip |
of: mdio: provide devm_of_mdiobus_register()
Implement a managed variant of of_mdiobus_register(). We need to make
mdio_devres into its own module because otherwise we'd hit circular
sumbol dependencies between phylib and of_mdio.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/mdio_devres.c')
-rw-r--r-- | drivers/net/phy/mdio_devres.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/net/phy/mdio_devres.c b/drivers/net/phy/mdio_devres.c index 0b9bd9a61378..b560e99695df 100644 --- a/drivers/net/phy/mdio_devres.c +++ b/drivers/net/phy/mdio_devres.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-or-later #include <linux/device.h> +#include <linux/of_mdio.h> #include <linux/phy.h> #include <linux/stddef.h> @@ -94,3 +95,39 @@ int __devm_mdiobus_register(struct device *dev, struct mii_bus *bus, return 0; } EXPORT_SYMBOL(__devm_mdiobus_register); + +#if IS_ENABLED(CONFIG_OF_MDIO) +/** + * devm_of_mdiobus_register - Resource managed variant of of_mdiobus_register() + * @dev: Device to register mii_bus for + * @mdio: MII bus structure to register + * @np: Device node to parse + */ +int devm_of_mdiobus_register(struct device *dev, struct mii_bus *mdio, + struct device_node *np) +{ + struct mdiobus_devres *dr; + int ret; + + if (WARN_ON(!devres_find(dev, devm_mdiobus_free, + mdiobus_devres_match, mdio))) + return -EINVAL; + + dr = devres_alloc(devm_mdiobus_unregister, sizeof(*dr), GFP_KERNEL); + if (!dr) + return -ENOMEM; + + ret = of_mdiobus_register(mdio, np); + if (ret) { + devres_free(dr); + return ret; + } + + dr->mii = mdio; + devres_add(dev, dr); + return 0; +} +EXPORT_SYMBOL(devm_of_mdiobus_register); +#endif /* CONFIG_OF_MDIO */ + +MODULE_LICENSE("GPL"); |