diff options
Diffstat (limited to 'arch/arm/include/asm')
| -rw-r--r-- | arch/arm/include/asm/dma-iommu.h | 4 | ||||
| -rw-r--r-- | arch/arm/include/asm/dma-mapping.h | 6 |
2 files changed, 5 insertions, 5 deletions
diff --git a/arch/arm/include/asm/dma-iommu.h b/arch/arm/include/asm/dma-iommu.h index 2ef282f96651..c090ec675eac 100644 --- a/arch/arm/include/asm/dma-iommu.h +++ b/arch/arm/include/asm/dma-iommu.h @@ -9,6 +9,8 @@ #include <linux/kmemcheck.h> #include <linux/kref.h> +#define ARM_MAPPING_ERROR (~(dma_addr_t)0x0) + struct dma_iommu_mapping { /* iommu specific data */ struct iommu_domain *domain; @@ -33,5 +35,7 @@ int arm_iommu_attach_device(struct device *dev, struct dma_iommu_mapping *mapping); void arm_iommu_detach_device(struct device *dev); +int arm_dma_supported(struct device *dev, u64 mask); + #endif /* __KERNEL__ */ #endif diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h index 680d3f3889e7..4e0285a66ef8 100644 --- a/arch/arm/include/asm/dma-mapping.h +++ b/arch/arm/include/asm/dma-mapping.h @@ -12,18 +12,14 @@ #include <xen/xen.h> #include <asm/xen/hypervisor.h> -#define DMA_ERROR_CODE (~(dma_addr_t)0x0) extern const struct dma_map_ops arm_dma_ops; extern const struct dma_map_ops arm_coherent_dma_ops; static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) { - return &arm_dma_ops; + return IS_ENABLED(CONFIG_MMU) ? &arm_dma_ops : &dma_noop_ops; } -#define HAVE_ARCH_DMA_SUPPORTED 1 -extern int dma_supported(struct device *dev, u64 mask); - #ifdef __arch_page_to_dma #error Please update to __arch_pfn_to_dma #endif |