Fix this error when CONFIG_PM is not enabled: drivers/usb/host/xhci.c:675: error: implicit declaration of function 'usb_root_hub_lost_power' Wrap xhci_suspend() and xhci_resume() into an ifdef CONFIG_PM, along with the functions that only they call -- xhci_save_registers() and xhci_restore_registers(). Reported-by: Randy Dunlap <randy.dunlap@xxxxxxxxxx> Signed-off-by: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx> --- drivers/usb/host/xhci.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 33d0034..9dc5be5 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -551,6 +551,7 @@ void xhci_shutdown(struct usb_hcd *hcd) xhci_readl(xhci, &xhci->op_regs->status)); } +#ifdef CONFIG_PM static void xhci_save_registers(struct xhci_hcd *xhci) { xhci->s3.command = xhci_readl(xhci, &xhci->op_regs->command); @@ -761,6 +762,13 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated) return 0; } +#else + +#define xhci_suspend NULL +#define xhci_resume NULL + +#endif /* CONFIG_PM */ + /*-------------------------------------------------------------------------*/ /** -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html