fpga_region_class_find
region = fpga_region_class_find(NULL, &fme_region->region->dev,
EXPORT_SYMBOL_GPL(fpga_region_class_find);
return fpga_region_class_find(NULL, np, device_match_of_node);
region = fpga_region_class_find(NULL, ctx->region_dev, fake_region_match);
fpga_region_class_find(struct device *start, const void *data,