1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/bcma/host_pci.c b/drivers/bcma/host_pci.c
index a62a2f9091f5..0856189c065f 100644
--- a/drivers/bcma/host_pci.c
+++ b/drivers/bcma/host_pci.c
@@ -351,3 +351,37 @@ void bcma_host_pci_down(struct bcma_bus *bus)
 		bcma_core_pci_down(&bus->drv_pci[0]);
 }
 EXPORT_SYMBOL_GPL(bcma_host_pci_down);
+
+/* See also si_pci_setup */
+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;
+}
+EXPORT_SYMBOL_GPL(bcma_host_pci_irq_ctl);