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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: b0c69b4bac ("usb: host: plat: Enable xHCI plat runtime PM")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Arnd Bergmann 2017-04-21 23:42:54 +02:00 committed by Greg Kroah-Hartman
parent 9f41ebfb7e
commit d852ed98f6
2 changed files with 4 additions and 13 deletions
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12
drivers/usb/host/xhci-plat.c
View File

@ -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)

5
drivers/usb/host/xhci.h
View File

@ -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);