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usb: xhci: Mark two functions __maybe_unused 

Resolves the following build warnings:
drivers/usb/host/xhci.c:332:13: warning: 'xhci_msix_sync_irqs' defined but not used [-Wunused-function]
drivers/usb/host/xhci.c:3901:12: warning: 'xhci_change_max_exit_latency' defined but not used [-Wunused-function]

These functions are not always used, and since they're marked static
they will produce build warnings:
- xhci_msix_sync_irqs is only used with CONFIG_PCI.
- xhci_change_max_exit_latency is a little more complicated with
  dependencies on CONFIG_PM and CONFIG_PM_RUNTIME.

Instead of building a bigger maze of ifdefs in this code, I've just
marked both with __maybe_unused.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
This commit is contained in:
Olof Johansson 2013-07-23 11:58:20 -07:00 committed by Sarah Sharp
parent 203a86613f
commit d5c82feb5c
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/host/xhci.c
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@ -329,7 +329,7 @@ static void xhci_cleanup_msix(struct xhci_hcd *xhci)
return;
}
static void xhci_msix_sync_irqs(struct xhci_hcd *xhci)
static void __maybe_unused xhci_msix_sync_irqs(struct xhci_hcd *xhci)
{
int i;
@ -3898,7 +3898,7 @@ int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1)
* Issue an Evaluate Context command to change the Maximum Exit Latency in the
* slot context. If that succeeds, store the new MEL in the xhci_virt_device.
*/
static int xhci_change_max_exit_latency(struct xhci_hcd *xhci,
static int __maybe_unused xhci_change_max_exit_latency(struct xhci_hcd *xhci,
struct usb_device *udev, u16 max_exit_latency)
{
struct xhci_virt_device *virt_dev;