From: Bartosz Golaszewski <b...@bgdev.pl>
Date: Sun, 5 Jul 2020 11:55:47 +0200
> From: Bartosz Golaszewski <bgolaszew...@baylibre.com>
>
> If phylib is built as a module and CONFIG_MDIO_DEVICE is 'y', the
> mdio_device and mdio_bus code will be in the phylib module, not in the
> kernel image. Meanwhile we build mdio_devres depending on the
> CONFIG_MDIO_DEVICE symbol, so if it's 'y', it will go into the kernel
> and we'll hit the following linker error:
>
> ld: drivers/net/phy/mdio_devres.o: in function `devm_mdiobus_alloc_size':
>>> drivers/net/phy/mdio_devres.c:38: undefined reference to
>>> `mdiobus_alloc_size'
> ld: drivers/net/phy/mdio_devres.o: in function `devm_mdiobus_free':
>>> drivers/net/phy/mdio_devres.c:16: undefined reference to `mdiobus_free'
> ld: drivers/net/phy/mdio_devres.o: in function `__devm_mdiobus_register':
>>> drivers/net/phy/mdio_devres.c:87: undefined reference to
>>> `__mdiobus_register'
> ld: drivers/net/phy/mdio_devres.o: in function `devm_mdiobus_unregister':
>>> drivers/net/phy/mdio_devres.c:53: undefined reference to
>>> `mdiobus_unregister'
> ld: drivers/net/phy/mdio_devres.o: in function `devm_of_mdiobus_register':
>>> drivers/net/phy/mdio_devres.c:120: undefined reference to
>>> `of_mdiobus_register'
>
> Add a hidden Kconfig option for MDIO_DEVRES which will be currently
> selected by CONFIG_PHYLIB as there are no non-phylib users of these
> helpers.
>
> Reported-by: kernel test robot <l...@intel.com>
> Fixes: ac3a68d56651 ("net: phy: don't abuse devres in
> devm_mdiobus_register()")
> Signed-off-by: Bartosz Golaszewski <bgolaszew...@baylibre.com>
Applied, thank you.
