From 2434bbb30e79468c49cff3cff6005236f55ed188 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Sun, 30 Nov 2008 18:53:40 +0000 Subject: [PATCH] powerpc: Fix dma_map_sg() cache flushing on non coherent platforms On PowerPC 4xx or other non cache-coherent platforms, we lost the appropriate cache flushing in dma_map_sg() when merging the 32 and 64-bit DMA code (commit 4fc665b88a79a45bae8bbf3a05563c27c7337c3d, "powerpc: Merge 32 and 64-bit dma code"). This restores it. Signed-off-by: Benjamin Herrenschmidt Acked-by: Becky Bruce Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/dma.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c index 1562daf8839..3a6eaa876ee 100644 --- a/arch/powerpc/kernel/dma.c +++ b/arch/powerpc/kernel/dma.c @@ -75,6 +75,7 @@ static int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, for_each_sg(sgl, sg, nents, i) { sg->dma_address = sg_phys(sg) + get_dma_direct_offset(dev); sg->dma_length = sg->length; + __dma_sync_page(sg_page(sg), sg->offset, sg->length, direction); } return nents; -- 2.20.1