linux-kernel - Re: [PATCH] usb: host: xhci: remove #ifdef around PM functions

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Date:   Wed, 26 Apr 2017 22:55:49 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Mathias Nyman <mathias.nyman@...el.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Felipe Balbi <balbi@...com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Baolin Wang <baolin.wang@...aro.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: host: xhci: remove #ifdef around PM functions

On Fri, Apr 21, 2017 at 11:42:54PM +0200, Arnd Bergmann wrote:
> 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: b0c69b4bace3 ("usb: host: plat: Enable xHCI plat runtime PM")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  drivers/usb/host/xhci-plat.c | 12 ++++--------
>  drivers/usb/host/xhci.h      |  5 -----
>  2 files changed, 4 insertions(+), 13 deletions(-)

Now applied, thanks.

greg k-h