> 2023年4月1日 10:15，Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> 写道： > > Hi all, > > This series split out second half of my previous series > "[PATCH 0/4] MIPS DMA coherence fixes". > > It intends to use dma_default_coherent to determine the default coherency of > devicetree probed devices instead of hardcoding it with Kconfig options. > > For some MIPS systems, dma_default_coherent is determined with either > bootloader or hardware registers in platform initilization code, and devicetree > does not explicility specify the coherency of the device, so we need the ability > to change the default coherency of devicetree probed devices. > > For other platforms that supports noncoherent, dma_default_coherent is a fixed > value set by arch code. It's defaulted to false for most archs except RISC-V > and powerpc in some cases. Ping. Is there any issue remain in this series? Thanks Jiaxun > > Thanks > - Jiaxun > --- > v2: > - Add PATCH 1 to help with backporting > - Use Kconfig option to set dma_default_coherent > > v3: > - Style fixes > - Squash setting ARCH_DMA_DEFAULT_COHERENT into PATCH 4 > - Setting ARCH_DMA_DEFAULT_COHERENT for PowerPC > > v4: > - Drop first patch > > Jiaxun Yang (3): > dma-mapping: Provide a fallback dma_default_coherent > dma-mapping: Provide CONFIG_ARCH_DMA_DEFAULT_COHERENT > of: address: Always use dma_default_coherent for default coherency > > arch/powerpc/Kconfig | 2 +- > arch/riscv/Kconfig | 2 +- > drivers/of/Kconfig | 4 ---- > drivers/of/address.c | 2 +- > include/linux/dma-map-ops.h | 2 ++ > kernel/dma/Kconfig | 7 +++++++ > kernel/dma/mapping.c | 6 +++++- > 7 files changed, 17 insertions(+), 8 deletions(-) > > -- > 2.39.2 (Apple Git-143) >
