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arm-nommu: don't define arch_teardown_dma_ops 

We can just use the default implementation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
hifive-unleashed-5.1
Christoph Hellwig 2018-08-24 09:47:20 +02:00
parent e0a9317d90
commit 58643a3a80
2 changed files with 2 additions and 4 deletions
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2
arch/arm/include/asm/dma-mapping.h
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@ -100,8 +100,10 @@ static inline unsigned long dma_max_pfn(struct device *dev)
extern void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
const struct iommu_ops *iommu, bool coherent);
#ifdef CONFIG_MMU
#define arch_teardown_dma_ops arch_teardown_dma_ops
extern void arch_teardown_dma_ops(struct device *dev);
#endif
/* do not use this function in a driver */
static inline bool is_device_dma_coherent(struct device *dev)

4
arch/arm/mm/dma-mapping-nommu.c
View File

@ -237,7 +237,3 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
set_dma_ops(dev, dma_ops);
}
void arch_teardown_dma_ops(struct device *dev)
{
}