1 files changed, 5 insertions, 3 deletions

diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c
index 46d5696c4f27..a39c36af97ad 100644
--- a/arch/mips/mm/dma-default.c
+++ b/arch/mips/mm/dma-default.c
@@ -293,7 +293,7 @@ static inline void __dma_sync(struct page *page,
 static void mips_dma_unmap_page(struct device *dev, dma_addr_t dma_addr,
         size_t size, enum dma_data_direction direction, unsigned long attrs)
 {
-        if (cpu_needs_post_dma_flush(dev))
+        if (cpu_needs_post_dma_flush(dev) && !(attrs & DMA_ATTR_SKIP_CPU_SYNC))
                 __dma_sync(dma_addr_to_page(dev, dma_addr),
                            dma_addr & ~PAGE_MASK, size, direction);
         plat_post_dma_flush(dev);
@@ -307,7 +307,8 @@ static int mips_dma_map_sg(struct device *dev, struct scatterlist *sglist,
         struct scatterlist *sg;
 
         for_each_sg(sglist, sg, nents, i) {
-                if (!plat_device_is_coherent(dev))
+                if (!plat_device_is_coherent(dev) &&
+                    !(attrs & DMA_ATTR_SKIP_CPU_SYNC))
                         __dma_sync(sg_page(sg), sg->offset, sg->length,
                                    direction);
 #ifdef CONFIG_NEED_SG_DMA_LENGTH
@@ -324,7 +325,7 @@ static dma_addr_t mips_dma_map_page(struct device *dev, struct page *page,
         unsigned long offset, size_t size, enum dma_data_direction direction,
         unsigned long attrs)
 {
-        if (!plat_device_is_coherent(dev))
+        if (!plat_device_is_coherent(dev) && !(attrs & DMA_ATTR_SKIP_CPU_SYNC))
                 __dma_sync(page, offset, size, direction);
 
         return plat_map_dma_mem_page(dev, page) + offset;
@@ -339,6 +340,7 @@ static void mips_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
 
         for_each_sg(sglist, sg, nhwentries, i) {
                 if (!plat_device_is_coherent(dev) &&
+                    !(attrs & DMA_ATTR_SKIP_CPU_SYNC) &&
                     direction != DMA_TO_DEVICE)
                         __dma_sync(sg_page(sg), sg->offset, sg->length,
                                    direction);