net: ethernet: mtk_eth_soc: handle probe deferral

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[ Upstream commit 1d6d537dc5 ]

Move the call to of_get_ethdev_address to mtk_add_mac which is part of
the probe function and can hence itself return -EPROBE_DEFER should
of_get_ethdev_address return -EPROBE_DEFER. This allows us to entirely
get rid of the mtk_init function.

The problem of of_get_ethdev_address returning -EPROBE_DEFER surfaced
in situations in which the NVMEM provider holding the MAC address has
not yet be loaded at the time mtk_eth_soc is initially probed. In this
case probing of mtk_eth_soc should be deferred instead of falling back
to use a random MAC address, so once the NVMEM provider becomes
available probing can be repeated.

Fixes: 656e705243 ("net-next: mediatek: add support for MT7623 ethernet")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Daniel Golle 2023-07-13 03:42:29 +01:00 • committed by Greg Kroah-Hartman

parent 6924f3c898

commit 855643c8d2

1 changed files with 11 additions and 18 deletions

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drivers/net/ethernet/mediatek/mtk_eth_soc.c

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