usb: ehci: unlink_empty_async_suspended() only used with CONFIG_PM
Compiling with !CONFIG_PM generates an unused function warning on unlink_empty_async_suspended(). Enclose the function in a #ifdef CONFIG_PM Signed-off-by: Tony Prisk <linux@prisktech.co.nz> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1293,6 +1293,7 @@ static void unlink_empty_async(struct ehci_hcd *ehci)
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}
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}
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#ifdef CONFIG_PM
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/* The root hub is suspended; unlink all the async QHs */
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static void unlink_empty_async_suspended(struct ehci_hcd *ehci)
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{
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@ -1305,6 +1306,7 @@ static void unlink_empty_async_suspended(struct ehci_hcd *ehci)
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}
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start_iaa_cycle(ehci);
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}
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#endif
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/* makes sure the async qh will become idle */
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/* caller must own ehci->lock */
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