net: ethernet: ti: am65-cpsw: handle -EPROBE_DEFER

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of_get_mac_address() might fetch the MAC address from NVMEM and that
driver might not have been loaded. In that case, -EPROBE_DEFER is
returned. Right now, this will trigger an immediate fallback to
am65_cpsw_am654_get_efuse_macid() possibly resulting in a random MAC
address although the MAC address is stored in the referenced NVMEM.

Fix it by handling the -EPROBE_DEFER return code correctly. This also
means that the creation of the MDIO device has to be moved to a later
stage as -EPROBE_DEFER must not be returned after child devices are
created.

Signed-off-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250414084336.4017237-3-mwalle@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Michael Walle 2025-04-14 10:43:36 +02:00 • committed by Jakub Kicinski

parent 1a377f142e

commit 09737cb80b

1 changed files with 13 additions and 11 deletions

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drivers/net/ethernet/ti/am65-cpsw-nuss.c

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