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usb: ehci: mark unlink_empty_async_suspended() as __maybe_unused

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Patch 4d053fdac3 "usb: ehci: unlink_empty_async_suspended() only used
with CONFIG_PM" tried to hide the unlink_empty_async_suspended function
inside of an #ifdef to work around an unused function warning.

Unfortunately that had the effect of introducing a new warning:

drivers/usb/host/ehci-q.c:1297:13: warning: 'unlink_empty_async_suspended'
	declared 'static' but never defined [-Wunused-function]

While we could add another #ifdef around the function declaration to avoid
this, a nicer solution is to mark it as __maybe_unused, which will let
gcc silently drop the function definition when it is not needed.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Arnd Bergmann 2013-03-28 21:09:46 +00:00 committed by Greg Kroah-Hartman
parent 05768918b9
commit 70b55c2ad0
1 changed files with 1 additions and 3 deletions
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4
drivers/usb/host/ehci-q.c
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@ -1293,9 +1293,8 @@ static void unlink_empty_async(struct ehci_hcd *ehci)
}
}
#ifdef CONFIG_PM
/* The root hub is suspended; unlink all the async QHs */
static void unlink_empty_async_suspended(struct ehci_hcd *ehci)
static void __maybe_unused unlink_empty_async_suspended(struct ehci_hcd *ehci)
{
struct ehci_qh *qh;
@ -1306,7 +1305,6 @@ static void unlink_empty_async_suspended(struct ehci_hcd *ehci)
}
start_iaa_cycle(ehci);
}
#endif
/* makes sure the async qh will become idle */
/* caller must own ehci->lock */