Message ID | 20230327121317.4081816-8-arnd@kernel.org (mailing list archive) |
---|---|
State | Handled Elsewhere |
Headers | show |
Series | dma-mapping: unify support for cache flushes | expand |
Context | Check | Description |
---|---|---|
conchuod/cover_letter | success | Series has a cover letter |
conchuod/tree_selection | success | Guessed tree name to be for-next at HEAD e45d6a52fe2b |
conchuod/fixes_present | success | Fixes tag not required for -next series |
conchuod/maintainers_pattern | success | MAINTAINERS pattern errors before the patch: 1 and now 1 |
conchuod/verify_signedoff | success | Signed-off-by tag matches author and committer |
conchuod/kdoc | success | Errors and warnings before: 0 this patch: 0 |
conchuod/build_rv64_clang_allmodconfig | success | Errors and warnings before: 18 this patch: 18 |
conchuod/module_param | success | Was 0 now: 0 |
conchuod/build_rv64_gcc_allmodconfig | success | Errors and warnings before: 18 this patch: 18 |
conchuod/build_rv32_defconfig | success | Build OK |
conchuod/dtb_warn_rv64 | success | Errors and warnings before: 3 this patch: 3 |
conchuod/header_inline | success | No static functions without inline keyword in header files |
conchuod/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 27 lines checked |
conchuod/source_inline | success | Was 0 now: 0 |
conchuod/build_rv64_nommu_k210_defconfig | success | Build OK |
conchuod/verify_fixes | success | No Fixes tag |
conchuod/build_rv64_nommu_virt_defconfig | success | Build OK |
diff --git a/arch/powerpc/mm/dma-noncoherent.c b/arch/powerpc/mm/dma-noncoherent.c index e108cacf877f..00e59a4faa2b 100644 --- a/arch/powerpc/mm/dma-noncoherent.c +++ b/arch/powerpc/mm/dma-noncoherent.c @@ -104,26 +104,7 @@ static void __dma_phys_op(phys_addr_t paddr, size_t size, enum dma_cache_op op) void arch_sync_dma_for_device(phys_addr_t paddr, size_t size, enum dma_data_direction dir) { - switch (direction) { - case DMA_NONE: - BUG(); - case DMA_FROM_DEVICE: - /* - * invalidate only when cache-line aligned otherwise there is - * the potential for discarding uncommitted data from the cache - */ - if ((start | end) & (L1_CACHE_BYTES - 1)) - __dma_phys_op(start, end, DMA_CACHE_FLUSH); - else - __dma_phys_op(start, end, DMA_CACHE_INVAL); - break; - case DMA_TO_DEVICE: /* writeback only */ - __dma_phys_op(start, end, DMA_CACHE_CLEAN); - break; - case DMA_BIDIRECTIONAL: /* writeback and invalidate */ - __dma_phys_op(start, end, DMA_CACHE_FLUSH); - break; - } + __dma_phys_op(start, end, DMA_CACHE_CLEAN); } void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size,