Re: [PATCH v1 3/4] MIPS: bmips: Remove obsolete DMA mapping support

Christoph Hellwig
2021-12-13T08:28:22Z

On Thu, Dec 09, 2021 at 01:31:39PM -0800, Florian Fainelli wrote:
> On 12/9/21 12:47 PM, Jim Quinlan wrote:
> > The code in 'arch/mips/bmips/dma.c' performed DMA mapping for inbound
> > regions. This mapping was and is required for the Broadcom STB PCIe
> > controller HW. This code is removed as the current 'struct device' has a
> > @dma_range_map field which performs the same functionality by processing
> > the "dma-ranges" DT property.
> >
> > Subsequently, ARCH_HAS_PHYS_TO_DMA is now unset since the dma_to_phys()
> > and phys_to_dma() functions are removed.
> >
> > Signed-off-by: Jim Quinlan <jim2101024@gmail.com>
>
> CC Christoph so he can do the happy dance, thanks!

No actual patch content in this mail so I can't comment about the
substance, but removing another ARCH_HAS_PHYS_TO_DMA instance is always
awesome.