Guo Ren ae76f635d4 csky: Optimize arch_sync_dma_for_cpu/device with dma_inv_range ... DMA_FROM_DEVICE only need to read dma data of memory into CPU cache, so there is no need to clear cache before. Also clear + inv for DMA_FROM_DEVICE won't cause problem, because the memory range for dma won't be touched by software during dma working. Changes for V2: - Remove clr cache and ignore the DMA_TO_DEVICE in _for_cpu. - Change inv to wbinv cache with DMA_FROM_DEVICE in _for_device. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Arnd Bergmann <arnd@arndb.de>		2019-08-06 15:15:34 +08:00
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asm	csky: Optimize arch_sync_dma_for_cpu/device with dma_inv_range	2019-08-06 15:15:34 +08:00
uapi/asm	treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers	2019-07-25 11:05:10 +02:00