linux-kernel - Re: [PATCH] phy: zynqmp: Fix unused-function compiler warning

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Date:   Wed, 1 Jul 2020 19:06:43 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     Tobias Klauser <tklauser@...tanz.ch>,
        Anurag Kumar Vulisha <anurag.kumar.vulisha@...inx.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Michal Simek <michal.simek@...inx.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] phy: zynqmp: Fix unused-function compiler warning

On 01-07-20, 16:19, Laurent Pinchart wrote:
> Hi Tobias,
> 
> Thank you for the patch.
> 
> On Wed, Jul 01, 2020 at 11:04:38AM +0200, Tobias Klauser wrote:
> > This fixes the following compiler warning when building with
> > CONFIG_PM && !CONFIG_PM_SLEEP:
> > 
> > drivers/phy/xilinx/phy-zynqmp.c:830:12: warning: ‘xpsgtr_resume’ defined but not used [-Wunused-function]
> >   830 | static int xpsgtr_resume(struct device *dev)
> >       |            ^~~~~~~~~~~~~
> > drivers/phy/xilinx/phy-zynqmp.c:819:12: warning: ‘xpsgtr_suspend’ defined but not used [-Wunused-function]
> >   819 | static int xpsgtr_suspend(struct device *dev)
> >       |            ^~~~~~~~~~~~~~
> 
> Oops :-S Sorry about that.
> 
> Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> 
> Vinod or Kishon, can you pick this patch up, or do I need to send a pull
> request ? (It's my first driver in the PHY subsystem so I don't know
> what the usual practices are there)

patches are welcome :-)

> 
> > Signed-off-by: Tobias Klauser <tklauser@...tanz.ch>
> > ---
> >  drivers/phy/xilinx/phy-zynqmp.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/drivers/phy/xilinx/phy-zynqmp.c b/drivers/phy/xilinx/phy-zynqmp.c
> > index 8babee2ce9ec..22a0ae635797 100644
> > --- a/drivers/phy/xilinx/phy-zynqmp.c
> > +++ b/drivers/phy/xilinx/phy-zynqmp.c
> > @@ -815,7 +815,7 @@ static struct phy *xpsgtr_xlate(struct device *dev,
> >   * Power Management
> >   */
> >  
> > -#ifdef CONFIG_PM
> > +#ifdef CONFIG_PM_SLEEP

How about marking it as __maybe_unused instead?

-- 
~Vinod