Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index 8436f6a..bdd80dd 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -18,7 +18,9 @@
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
- return IS_ENABLED(CONFIG_MMU) ? &arm_dma_ops : &dma_direct_ops;
+ if (IS_ENABLED(CONFIG_MMU) && !IS_ENABLED(CONFIG_ARM_LPAE))
+ return &arm_dma_ops;
+ return NULL;
}
#ifdef __arch_page_to_dma
@@ -89,26 +91,6 @@
}
#endif
-/* The ARM override for dma_max_pfn() */
-static inline unsigned long dma_max_pfn(struct device *dev)
-{
- return dma_to_pfn(dev, *dev->dma_mask);
-}
-#define dma_max_pfn(dev) dma_max_pfn(dev)
-
-#define arch_setup_dma_ops arch_setup_dma_ops
-extern void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
- const struct iommu_ops *iommu, bool coherent);
-
-#define arch_teardown_dma_ops arch_teardown_dma_ops
-extern void arch_teardown_dma_ops(struct device *dev);
-
-/* do not use this function in a driver */
-static inline bool is_device_dma_coherent(struct device *dev)
-{
- return dev->archdata.dma_coherent;
-}
-
/**
* arm_dma_alloc - allocate consistent memory for DMA
* @dev: valid struct device pointer, or NULL for ISA and EISA-like devices