PCI: use weak functions for MSI arch-specific functions

[mirror_ubuntu-focal-kernel.git] / arch / x86 / kernel / x86_init.c

diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index 45a14dbbddafe602a4910ce90fc59b5b7ac08ee2..5587f991d11130613d126d9a95d790c986d862fd 100644 (file)
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -107,6 +107,8 @@ struct x86_platform_ops x86_platform = {
 };
 
 EXPORT_SYMBOL_GPL(x86_platform);
+
+#if defined(CONFIG_PCI_MSI)
 struct x86_msi_ops x86_msi = {
        .setup_msi_irqs         = native_setup_msi_irqs,
        .compose_msi_msg        = native_compose_msi_msg,
@@ -116,6 +118,28 @@ struct x86_msi_ops x86_msi = {
        .setup_hpet_msi         = default_setup_hpet_msi,
 };
 
+/* MSI arch specific hooks */
+int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
+{
+       return x86_msi.setup_msi_irqs(dev, nvec, type);
+}
+
+void arch_teardown_msi_irqs(struct pci_dev *dev)
+{
+       x86_msi.teardown_msi_irqs(dev);
+}
+
+void arch_teardown_msi_irq(unsigned int irq)
+{
+       x86_msi.teardown_msi_irq(irq);
+}
+
+void arch_restore_msi_irqs(struct pci_dev *dev, int irq)
+{
+       x86_msi.restore_msi_irqs(dev, irq);
+}
+#endif
+
 struct x86_io_apic_ops x86_io_apic_ops = {
        .init                   = native_io_apic_init_mappings,
        .read                   = native_io_apic_read,