The Rust ax88796b driver doesn't export anything. The Rust and C
drivers handle the device_table in the same way when they are built as
a module.

$ grep __mod_mdio /proc/kallsyms
ffffffffa0358058 r __mod_mdio__phydev_device_table [ax88796b_rust]

$ grep __mod_mdio /proc/kallsyms
ffffffffa0288010 d __mod_mdio__asix_tbl_device_table	[ax88796b]

I checked what r and d mean. If they are upper case, they are
exported. Lower case means they are not exported.

My laptop is using the realtek PHY driver:

0000000000000000 r __mod_mdio__realtek_tbl_device_table	[realtek]

Also lower r.

Looking at all the symbols for the realtek driver, all the symbols use
lower case. Nothing is exported.

Is that what you see for the ax88796b_rust?

	Andrew