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| author | Christoph Hellwig <hch@lst.de> | 2020-07-14 14:18:55 +0200 |
|---|---|---|
| committer | Rich Felker <dalias@libc.org> | 2020-08-14 22:05:17 -0400 |
| commit | cd57d07b1e4e08f95a27b59253b5c8a46abf4f29 (patch) | |
| tree | 8d33e99707ca843df887efdf6a95341cfa213a4f | |
| parent | 846f9e1fb9b9a2c4eecefa2fdbfb51e975a7d532 (diff) | |
| download | linux-cd57d07b1e4e08f95a27b59253b5c8a46abf4f29.tar.gz linux-cd57d07b1e4e08f95a27b59253b5c8a46abf4f29.tar.xz | |
sh: don't allow non-coherent DMA for NOMMU
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>
Signed-off-by: Rich Felker <dalias@libc.org>
| -rw-r--r-- | arch/sh/Kconfig | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 1bf23e272483..7082a4a499fd 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -61,6 +61,7 @@ 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 @@ -135,7 +136,7 @@ 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 |