From: Tobias Klauser <tklauser@distanz.ch>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Vinod Koul <vkoul@kernel.org>,
Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>,
Kishon Vijay Abraham I <kishon@ti.com>,
Michal Simek <michal.simek@xilinx.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] phy: zynqmp: Fix unused-function compiler warning
Date: Wed, 1 Jul 2020 16:00:26 +0200 [thread overview]
Message-ID: <20200701140026.ziplawf6oimjyssh@distanz.ch> (raw)
In-Reply-To: <20200701134443.GE27013@pendragon.ideasonboard.com>
On 2020-07-01 at 15:44:43 +0200, Laurent Pinchart <laurent.pinchart@ideasonboard.com> wrote:
> On Wed, Jul 01, 2020 at 07:06:43PM +0530, Vinod Koul wrote:
> > On 01-07-20, 16:19, Laurent Pinchart wrote:
> > > 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@ideasonboard.com>
Thanks for the review Laurent.
> > > 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@distanz.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?
>
> I don't mind either, I'll let Tobias decide, but his patch seems fine,
> is there a drawback in his approach ? If it's just a matter of personal
> preference, I'd rather not require a v2.
I don't mind either, it was just what seemed the more straight-forward
fix. On the other hand, it seems that marking these functions as
__maybe_unused is the more widely used method in other PHY drivers. In
addition it would have the nice side-effect of the code always being
compile-checked regardless of the value of CONFIG_PM_SLEEP.
Will send a v2 using __maybe_unused and will let you decide which one to
pick :)
Thanks
next prev parent reply other threads:[~2020-07-01 14:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-01 9:04 [PATCH] phy: zynqmp: Fix unused-function compiler warning Tobias Klauser
2020-07-01 13:19 ` Laurent Pinchart
2020-07-01 13:36 ` Vinod Koul
2020-07-01 13:44 ` Laurent Pinchart
2020-07-01 13:55 ` Vinod Koul
2020-07-01 14:00 ` Tobias Klauser [this message]
2020-07-01 14:01 ` Laurent Pinchart
2020-07-01 14:07 ` Tobias Klauser
2020-07-01 14:09 ` Laurent Pinchart
2020-07-01 14:10 ` [PATCH v2] " Tobias Klauser
2020-07-01 15:05 ` Vinod Koul
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