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net: mdiobus: release reset_gpio in mdiobus_unregister_device() 

reset_gpio is claimed in mdiobus_register_device(), but it is not
released in mdiobus_unregister_device(). It is instead only
released when the whole MDIO bus is unregistered.
When a device uses the reset_gpio property, it becomes impossible
to unregister it and register it again, because the GPIO remains
claimed.
This patch resolves that issue.

Fixes: bafbdd527d ("phylib: Add device reset GPIO support") # see notes
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Cc: Csókás Bence <csokas.bence@prolan.hu>
[ csokas.bence: Resolve rebase conflict and clarify msg ]
Signed-off-by: Buday Csaba <buday.csaba@prolan.hu>
Link: https://patch.msgid.link/20250807135449.254254-2-csokas.bence@prolan.hu
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Buday Csaba 2025-08-07 15:54:49 +02:00 committed by Paolo Abeni
parent 8ee90742cf
commit 8ea25274eb
2 changed files with 1 additions and 3 deletions
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1
drivers/net/phy/mdio_bus.c
View File

@ -91,6 +91,7 @@ int mdiobus_unregister_device(struct mdio_device *mdiodev)
if (mdiodev->bus->mdio_map[mdiodev->addr] != mdiodev)
return -EINVAL;
gpiod_put(mdiodev->reset_gpio);
reset_control_put(mdiodev->reset_ctrl);
mdiodev->bus->mdio_map[mdiodev->addr] = NULL;

3
drivers/net/phy/mdio_bus_provider.c
View File

@ -443,9 +443,6 @@ void mdiobus_unregister(struct mii_bus *bus)
if (!mdiodev)
continue;
if (mdiodev->reset_gpio)
gpiod_put(mdiodev->reset_gpio);
mdiodev->device_remove(mdiodev);
mdiodev->device_free(mdiodev);
}