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In preparation of looking for dfls based on a vendor specific pci capability, move the code for the default method of finding the first dfl at offset 0 of Bar 0 to its own function. Acked-by: Wu Hao <hao.wu@intel.com> Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com> Signed-off-by: Moritz Fischer <mdf@kernel.org> Link: https://lore.kernel.org/r/20210107043714.991646-2-mdf@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>