On Thu, Feb 23, 2023 at 11:36:43AM +0000, Jiaxun Yang wrote: > For riscv our assumption is unless a device states it is non-coherent, > we take it to be DMA coherent. > > Select ARCH_DMA_DEFAULT_COHERENT to ensure dma_default_coherent > is always initialized to true. > > Signed-off-by: Jiaxun Yang <jiaxun.y...@flygoat.com> > --- > arch/riscv/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig > index 1d46a268ce16..b71ce992c0c0 100644 > --- a/arch/riscv/Kconfig > +++ b/arch/riscv/Kconfig > @@ -233,6 +233,7 @@ config LOCKDEP_SUPPORT > > config RISCV_DMA_NONCOHERENT > bool > + select ARCH_DMA_DEFAULT_COHERENT
Since we are always coherent by default, I feel like you should put this in the main "config RISCV" section, where OF_DMA_DEFAULT_COHERENT currently is, no? Wouldn't bother respinning for that unless the dma folk have comments for you. > select ARCH_HAS_DMA_PREP_COHERENT > select ARCH_HAS_SETUP_DMA_OPS > select ARCH_HAS_SYNC_DMA_FOR_CPU > -- > 2.37.1 (Apple Git-137.1) >
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