diff options
Diffstat (limited to 'arch/riscv/mm/dma-noncoherent.c')
-rw-r--r-- | arch/riscv/mm/dma-noncoherent.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/riscv/mm/dma-noncoherent.c b/arch/riscv/mm/dma-noncoherent.c index 06b8fea58e20..f269990e26c3 100644 --- a/arch/riscv/mm/dma-noncoherent.c +++ b/arch/riscv/mm/dma-noncoherent.c @@ -11,6 +11,8 @@ #include <asm/cacheflush.h> static bool noncoherent_supported __ro_after_init; +int dma_cache_alignment __ro_after_init = ARCH_DMA_MINALIGN; +EXPORT_SYMBOL_GPL(dma_cache_alignment); static inline void arch_dma_cache_wback(phys_addr_t paddr, size_t size) { @@ -120,3 +122,9 @@ void riscv_noncoherent_supported(void) "Non-coherent DMA support enabled without a block size\n"); noncoherent_supported = true; } + +void __init riscv_set_dma_cache_alignment(void) +{ + if (!noncoherent_supported) + dma_cache_alignment = 1; +} |