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It is desirable to retain the mappings from the calling function. By simplifying this code, it will be much more straightforward to do that. Signed-off-by: Ben Widawsky <ben.widawsky@intel.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20210716231548.174778-3-ben.widawsky@intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>