ARC backend for dma_sync_single_for_(device|cpu) was broken as it was not honoring the @dir argument and simply forcing it based on the call: - arc_dma_sync_single_for_device(dir) assumed DMA_TO_DEVICE (cache wback) - arc_dma_sync_single_for_cpu(dir) assumed DMA_FROM_DEVICE (cache inv) This is not true given the DMA API programming model and has been discussed here [1] in some detail. Interestingly while the deficiency has been there forever, it only started showing up after 4.17 dma common ops rework, commit |
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cache.c | ||
dma.c | ||
extable.c | ||
fault.c | ||
highmem.c | ||
init.c | ||
ioremap.c | ||
Makefile | ||
mmap.c | ||
tlb.c | ||
tlbex.S |