[PATCH 13/25] openrisc: remove the no-op unmap_page and unmap_sg DMA operations
From: hch@lst.de (Christoph Hellwig)
Date: 2018-05-22 12:05:40
Also in:
linux-alpha, linux-arch, linux-iommu, linux-sh, lkml, sparclinux
Subsystem:
openrisc architecture, the rest · Maintainers:
Jonas Bonn, Stefan Kristiansson, Stafford Horne, Linus Torvalds
Signed-off-by: Christoph Hellwig <hch@lst.de> --- arch/openrisc/kernel/dma.c | 23 ----------------------- 1 file changed, 23 deletions(-)
diff --git a/arch/openrisc/kernel/dma.c b/arch/openrisc/kernel/dma.c
index 47601274abf7..7cadff93d179 100644
--- a/arch/openrisc/kernel/dma.c
+++ b/arch/openrisc/kernel/dma.c@@ -171,14 +171,6 @@ or1k_map_page(struct device *dev, struct page *page, return addr; } -static void -or1k_unmap_page(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction dir, - unsigned long attrs) -{ - /* Nothing special to do here... */ -} - static int or1k_map_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir,
@@ -195,19 +187,6 @@ or1k_map_sg(struct device *dev, struct scatterlist *sg, return nents; } -static void -or1k_unmap_sg(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir, - unsigned long attrs) -{ - struct scatterlist *s; - int i; - - for_each_sg(sg, s, nents, i) { - or1k_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir, 0); - } -} - static void or1k_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
@@ -226,9 +205,7 @@ const struct dma_map_ops or1k_dma_map_ops = { .alloc = or1k_dma_alloc, .free = or1k_dma_free, .map_page = or1k_map_page, - .unmap_page = or1k_unmap_page, .map_sg = or1k_map_sg, - .unmap_sg = or1k_unmap_sg, .sync_single_for_device = or1k_sync_single_for_device, }; EXPORT_SYMBOL(or1k_dma_map_ops);
--
2.17.0