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authorChristoph Hellwig <hch@lst.de>2020-09-01 13:28:13 +0200
committerChristoph Hellwig <hch@lst.de>2020-09-25 06:20:46 +0200
commit5a84292271402cffe0717bc58e2ad9a0c7977272 (patch)
tree9294a02e1c2e9d1bf08f59641d910ac8070eb32d /kernel/dma
parentd69d8adc5bf045e686338918292aa417c5282852 (diff)
dma-mapping: remove dma_cache_sync
All users are gone now, remove the API. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> (MIPS part)
Diffstat (limited to 'kernel/dma')
-rw-r--r--kernel/dma/Kconfig3
-rw-r--r--kernel/dma/mapping.c14
2 files changed, 0 insertions, 17 deletions
diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig
index 281785feb874..c5f717021f56 100644
--- a/kernel/dma/Kconfig
+++ b/kernel/dma/Kconfig
@@ -75,9 +75,6 @@ config ARCH_HAS_DMA_PREP_COHERENT
config ARCH_HAS_FORCE_DMA_UNENCRYPTED
bool
-config DMA_NONCOHERENT_CACHE_SYNC
- bool
-
config DMA_VIRT_OPS
bool
depends on HAS_DMA
diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c
index 9a045e51df17..673ea6759c15 100644
--- a/kernel/dma/mapping.c
+++ b/kernel/dma/mapping.c
@@ -529,20 +529,6 @@ int dma_set_coherent_mask(struct device *dev, u64 mask)
EXPORT_SYMBOL(dma_set_coherent_mask);
#endif
-void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
- enum dma_data_direction dir)
-{
- const struct dma_map_ops *ops = get_dma_ops(dev);
-
- BUG_ON(!valid_dma_direction(dir));
-
- if (dma_alloc_direct(dev, ops))
- arch_dma_cache_sync(dev, vaddr, size, dir);
- else if (ops->cache_sync)
- ops->cache_sync(dev, vaddr, size, dir);
-}
-EXPORT_SYMBOL(dma_cache_sync);
-
size_t dma_max_mapping_size(struct device *dev)
{
const struct dma_map_ops *ops = get_dma_ops(dev);