On Fri, May 11, 2018 at 12:15 PM, Yao Chen <chenyao11@xxxxxxxxxx> wrote: > Add support for MSI. > + int ret; > + > + if (IS_ENABLED(CONFIG_PCI_MSI)) { > + pci->pp.msi_irq = platform_get_irq(pdev, 0); > + if (pci->pp.msi_irq < 0) { > + dev_err(&pdev->dev, "failed to get MSI IRQ (%d)\n", > + pci->pp.msi_irq); > + return -ENODEV; Why shadowing actual error code? > + } > + ret = devm_request_irq(&pdev->dev, pci->pp.msi_irq, > + kirin_pcie_msi_irq_handler, > + IRQF_SHARED | IRQF_NO_THREAD, > + "kirin_pcie_msi", &pci->pp); > + if (ret) { > + dev_err(&pdev->dev, "failed to request MSI IRQ %d\n", > + pci->pp.msi_irq); > + return ret; > + } It would be easy to read and maintain if this would be a separate function. > + } -- With Best Regards, Andy Shevchenko