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dma-mapping: remove dma_cache_sync

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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)
This commit is contained in:
Christoph Hellwig
2020-09-01 13:28:13 +02:00
parent d69d8adc5b
commit 5a84292271
9 changed files with 0 additions and 50 deletions
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3
kernel/dma/Kconfig
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@@ -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

14
kernel/dma/mapping.c
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@@ -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);