| Message ID | 20200324162633.754714-10-hch@lst.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [01/10] sh: remove -Werror from Makefiles | expand |
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 808b638b11f3..b97d9712c252 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -48,6 +48,7 @@ config SUPERH select MAY_HAVE_SPARSE_IRQ select MODULES_USE_ELF_RELA select NEED_SG_DMA_LENGTH + select NO_DMA if !MMU && !DMA_COHERENT select NO_GENERIC_PCI_IOPORT_MAP if PCI select OLD_SIGACTION select OLD_SIGSUSPEND @@ -155,7 +156,7 @@ config DMA_COHERENT bool config DMA_NONCOHERENT - def_bool !DMA_COHERENT + def_bool !NO_DMA && !DMA_COHERENT select ARCH_HAS_SYNC_DMA_FOR_DEVICE config PGTABLE_LEVELS
The code handling non-coherent DMA depends on being able to remap code as non-cached. But that can't be done without an MMU, so using this option on NOMMU builds is broken. Signed-off-by: Christoph Hellwig <hch@lst.de> --- arch/sh/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)