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Revert "dma-mapping: clear dev->dma_ops in arch_teardown_dma_ops"

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This reverts commit 46053c7368.

This change breaks architectures setting up dma_ops in their own magic
way and not using arch_setup_dma_ops, so revert it.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig
2018-09-25 13:16:55 -07:00
parent 9406a49fd1
commit 1a0afc14b5
3 changed files with 11 additions and 4 deletions
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5
arch/arm64/include/asm/dma-mapping.h
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@@ -39,6 +39,11 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
const struct iommu_ops *iommu, bool coherent);
#define arch_setup_dma_ops arch_setup_dma_ops
#ifdef CONFIG_IOMMU_DMA
void arch_teardown_dma_ops(struct device *dev);
#define arch_teardown_dma_ops arch_teardown_dma_ops
#endif
/* do not use this function in a driver */
static inline bool is_device_dma_coherent(struct device *dev)
{