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Commit d852ed98 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Greg Kroah-Hartman
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usb: host: xhci: remove #ifdef around PM functions 



The #ifdef is slightly wrong as it doesn't cover the xhci_priv_resume_quirk()
function, causing a harmless warning:

drivers/usb/host/xhci-plat.c:58:12: error: 'xhci_priv_resume_quirk' defined but not used [-Werror=unused-function]
 static int xhci_priv_resume_quirk(struct usb_hcd *hcd)

A simpler way to do this correctly is to use __maybe_unused annotations
that let the compiler silently drop the functions when there is no
reference.

Fixes: b0c69b4b ("usb: host: plat: Enable xHCI plat runtime PM")
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9f41ebfb

drivers/usb/host/xhci-plat.c

+4 −8
Original line number Diff line number Diff line
@@ -355,8 +355,7 @@ static int xhci_plat_remove(struct platform_device *dev) 
	return 0;

}



#ifdef CONFIG_PM_SLEEP

static int xhci_plat_suspend(struct device *dev)

static int __maybe_unused xhci_plat_suspend(struct device *dev)

{

	struct usb_hcd	*hcd = dev_get_drvdata(dev);

	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
@@ -378,7 +377,7 @@ static int xhci_plat_suspend(struct device *dev) 
	return ret;

}



static int xhci_plat_resume(struct device *dev)

static int __maybe_unused xhci_plat_resume(struct device *dev)

{

	struct usb_hcd	*hcd = dev_get_drvdata(dev);

	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
@@ -393,10 +392,8 @@ static int xhci_plat_resume(struct device *dev) 


	return xhci_resume(xhci, 0);

}

#endif /* CONFIG_PM_SLEEP */



#ifdef CONFIG_PM

static int xhci_plat_runtime_suspend(struct device *dev)

static int __maybe_unused xhci_plat_runtime_suspend(struct device *dev)

{

	struct usb_hcd  *hcd = dev_get_drvdata(dev);

	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
@@ -404,14 +401,13 @@ static int xhci_plat_runtime_suspend(struct device *dev) 
	return xhci_suspend(xhci, true);

}



static int xhci_plat_runtime_resume(struct device *dev)

static int __maybe_unused xhci_plat_runtime_resume(struct device *dev)

{

	struct usb_hcd  *hcd = dev_get_drvdata(dev);

	struct xhci_hcd *xhci = hcd_to_xhci(hcd);



	return xhci_resume(xhci, 0);

}

#endif /* CONFIG_PM */



static const struct dev_pm_ops xhci_plat_pm_ops = {

	SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume)

drivers/usb/host/xhci.h

+0 −5
Original line number Diff line number Diff line
@@ -2004,13 +2004,8 @@ void xhci_init_driver(struct hc_driver *drv, 
int xhci_disable_slot(struct xhci_hcd *xhci,

			struct xhci_command *command, u32 slot_id);



#ifdef	CONFIG_PM

int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup);

int xhci_resume(struct xhci_hcd *xhci, bool hibernated);

#else

#define	xhci_suspend	NULL

#define	xhci_resume	NULL

#endif



irqreturn_t xhci_irq(struct usb_hcd *hcd);

irqreturn_t xhci_msi_irq(int irq, void *hcd);