IOREGION_LENGTH
if (!devm_request_region(dev, res->start, IOREGION_LENGTH, DRVNAME))
res.end = address + IOREGION_OFFSET + IOREGION_LENGTH - 1;
res.end = address + IOREGION_OFFSET + IOREGION_LENGTH - 1;
if (!devm_request_region(&pdev->dev, res->start, IOREGION_LENGTH, DRVNAME))
if (!devm_request_region(dev, res->start, IOREGION_LENGTH, DRVNAME))
res.end = address + IOREGION_OFFSET + IOREGION_LENGTH - 1;