From: Benjamin Herrenschmidt Date: Sun, 30 Nov 2008 18:53:40 +0000 (+0000) Subject: powerpc: Fix dma_map_sg() cache flushing on non coherent platforms X-Git-Tag: v5.15~36164^2~105^2 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=2434bbb30e79468c49cff3cff6005236f55ed188;p=mirror_ubuntu-kernels.git 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 --- diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c index 1562daf8839a..3a6eaa876ee1 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;