Hi Christoph,
On Fri, Sep 21, 2018 at 08:10:52AM +0200, Christoph Hellwig wrote:
> Paul, other mips folks, any comments?
>
> At this point I'm tempted to just move it to 4.20 and add a stable
> tag given that no one cared so far.
Copying Kevin & Florian as maintainers of the affected BMIPS systems in
case they have anything to add.
> On Tue, Sep 11, 2018 at 11:00:49AM +0200, Christoph Hellwig wrote:
> > The patch adding the infrastructure failed to actually add the symbol
> > declaration, oops..
> >
> > Fixes: faef87723a ("dma-noncoherent: add a arch_sync_dma_for_cpu_all hook")
> > Signed-off-by: Christoph Hellwig <h...@lst.de>
> > ---
> > kernel/dma/Kconfig | 3 +++
> > 1 file changed, 3 insertions(+)
> >
> > diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig
> > index 9bd54304446f..1b1d63b3634b 100644
> > --- a/kernel/dma/Kconfig
> > +++ b/kernel/dma/Kconfig
> > @@ -23,6 +23,9 @@ config ARCH_HAS_SYNC_DMA_FOR_CPU
> > bool
> > select NEED_DMA_MAP_STATE
> >
> > +config ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
> > + bool
> > +
> > config DMA_DIRECT_OPS
> > bool
> > depends on HAS_DMA
The change looks reasonable to me, so feel free to take your choice of:
Reviewed-by: Paul Burton <paul.bur...@mips.com>
Acked-by: Paul Burton <paul.bur...@mips.com>
My thought would be that it would be ideal to fix in 4.19 since that's
where the breakage is, but having said that I don't have much insight
into how bad the breakage is for the affected systems.
Thanks,
Paul
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