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[ Upstream commit 09737cb80b8686ffca4ed1805fee745d5c85604d ] 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> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.