On Thu, 28 Mar 2013, Arnd Bergmann wrote: > 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. IMO the compiler is being stupid. -Wunused-function should warn about functions that are defined but not called, not about functions that are declared but not defined. Grumble... Anyway yes, this is a good fix. Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
