int bcma_host_pci_irq_ctl()

in host_pci.c [355:385]

• 22 lines of code
• 4 McCabe index (conditional complexity)

int bcma_host_pci_irq_ctl(struct bcma_bus *bus, struct bcma_device *core,
			  bool enable)
{
	struct pci_dev *pdev;
	u32 coremask, tmp;
	int err = 0;

	if (bus->hosttype != BCMA_HOSTTYPE_PCI) {
		/* This bcma device is not on a PCI host-bus. So the IRQs are
		 * not routed through the PCI core.
		 * So we must not enable routing through the PCI core. */
		goto out;
	}

	pdev = bus->host_pci;

	err = pci_read_config_dword(pdev, BCMA_PCI_IRQMASK, &tmp);
	if (err)
		goto out;

	coremask = BIT(core->core_index) << 8;
	if (enable)
		tmp |= coremask;
	else
		tmp &= ~coremask;

	err = pci_write_config_dword(pdev, BCMA_PCI_IRQMASK, tmp);

out:
	return err;
}