--- /dev/null
+From 130eac4170859fb368681e00d390f20f44bbf27b Mon Sep 17 00:00:00 2001
+From: Arnd Bergmann <arnd@arndb.de>
+Date: Tue, 28 Mar 2023 15:10:43 +0200
+Subject: xhci: use pm_ptr() instead of #ifdef for CONFIG_PM conditionals
+
+From: Arnd Bergmann <arnd@arndb.de>
+
+commit 130eac4170859fb368681e00d390f20f44bbf27b upstream.
+
+A recent patch caused an unused-function warning in builds with
+CONFIG_PM disabled, after the function became marked 'static':
+
+drivers/usb/host/xhci-pci.c:91:13: error: 'xhci_msix_sync_irqs' defined but not used [-Werror=unused-function]
+ 91 | static void xhci_msix_sync_irqs(struct xhci_hcd *xhci)
+ | ^~~~~~~~~~~~~~~~~~~
+
+This could be solved by adding another #ifdef, but as there is
+a trend towards removing CONFIG_PM checks in favor of helper
+macros, do the same conversion here and use pm_ptr() to get
+either a function pointer or NULL but avoid the warning.
+
+As the hidden functions reference some other symbols, make
+sure those are visible at compile time, at the minimal cost of
+a few extra bytes for 'struct usb_device'.
+
+Fixes: 9abe15d55dcc ("xhci: Move xhci MSI sync function to to xhci-pci")
+Signed-off-by: Arnd Bergmann <arnd@arndb.de>
+Link: https://lore.kernel.org/r/20230328131114.1296430-1-arnd@kernel.org
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/usb/host/xhci-pci.c | 8 +-------
+ include/linux/usb.h | 3 +--
+ include/linux/usb/hcd.h | 2 --
+ 3 files changed, 2 insertions(+), 11 deletions(-)
+
+--- a/drivers/usb/host/xhci-pci.c
++++ b/drivers/usb/host/xhci-pci.c
+@@ -571,7 +571,6 @@ static void xhci_pci_remove(struct pci_d
+ pci_set_power_state(dev, PCI_D3hot);
+ }
+
+-#ifdef CONFIG_PM
+ /*
+ * In some Intel xHCI controllers, in order to get D3 working,
+ * through a vendor specific SSIC CONFIG register at offset 0x883c,
+@@ -721,7 +720,6 @@ static void xhci_pci_shutdown(struct usb
+ if (xhci->quirks & XHCI_SPURIOUS_WAKEUP)
+ pci_set_power_state(pdev, PCI_D3hot);
+ }
+-#endif /* CONFIG_PM */
+
+ /*-------------------------------------------------------------------------*/
+
+@@ -763,21 +761,17 @@ static struct pci_driver xhci_pci_driver
+ /* suspend and resume implemented later */
+
+ .shutdown = usb_hcd_pci_shutdown,
+-#ifdef CONFIG_PM
+ .driver = {
+- .pm = &usb_hcd_pci_pm_ops
++ .pm = pm_ptr(&usb_hcd_pci_pm_ops),
+ },
+-#endif
+ };
+
+ static int __init xhci_pci_init(void)
+ {
+ xhci_init_driver(&xhci_pci_hc_driver, &xhci_pci_overrides);
+-#ifdef CONFIG_PM
+ xhci_pci_hc_driver.pci_suspend = xhci_pci_suspend;
+ xhci_pci_hc_driver.pci_resume = xhci_pci_resume;
+ xhci_pci_hc_driver.shutdown = xhci_pci_shutdown;
+-#endif
+ return pci_register_driver(&xhci_pci_driver);
+ }
+ module_init(xhci_pci_init);
+--- a/include/linux/usb.h
++++ b/include/linux/usb.h
+@@ -697,13 +697,12 @@ struct usb_device {
+
+ unsigned long active_duration;
+
+-#ifdef CONFIG_PM
+ unsigned long connect_time;
+
+ unsigned do_remote_wakeup:1;
+ unsigned reset_resume:1;
+ unsigned port_is_suspended:1;
+-#endif
++
+ struct wusb_dev *wusb_dev;
+ int slot_id;
+ struct usb2_lpm_parameters l1_params;
+--- a/include/linux/usb/hcd.h
++++ b/include/linux/usb/hcd.h
+@@ -486,9 +486,7 @@ extern void usb_hcd_pci_shutdown(struct
+
+ extern int usb_hcd_amd_remote_wakeup_quirk(struct pci_dev *dev);
+
+-#ifdef CONFIG_PM
+ extern const struct dev_pm_ops usb_hcd_pci_pm_ops;
+-#endif
+ #endif /* CONFIG_USB_PCI */
+
+ /* pci-ish (pdev null is ok) buffer alloc/mapping support */