Re: [PATCH -next v3] arm64: mm: Fix unused variable warning in zone_sizes_init

From: Nicolas Saenz Julienne
Date: Wed Oct 16 2019 - 11:09:35 EST


On Wed, 2019-10-16 at 16:08 +0100, Catalin Marinas wrote:
> On Wed, Oct 16, 2019 at 07:47:14AM -0700, Nathan Chancellor wrote:
> > When building arm64 allnoconfig, CONFIG_ZONE_DMA and CONFIG_ZONE_DMA32
> > get disabled so there is a warning about max_dma being unused.
> >
> > ../arch/arm64/mm/init.c:215:16: warning: unused variable 'max_dma'
> > [-Wunused-variable]
> > unsigned long max_dma = min;
> > ^
> > 1 warning generated.
> >
> > Add __maybe_unused to make this clear to the compiler.
> >
> > Fixes: 1a8e1cef7603 ("arm64: use both ZONE_DMA and ZONE_DMA32")
> > Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx>
>
> Thanks. Queued on top of Nicolas' patches for 5.5. I also added Nicolas'
> reviewed-by from v2 as I suspect it still stands.

Yes, thanks!

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