iommu: Remove unused IOMMU_SYS_CACHE_ONLY flag

The IOMMU_SYS_CACHE_ONLY flag was never exposed via the DMA API and has no in-tree users. Remove it.

Will Deacon committed 6 years ago

Commit ecd72741 parent 9ebcfad2 files · +0 −9Browse files

Unified · Split

2 files

drivers/iommu/io-pgtable-arm.c +0 −3
include/linux/iommu.h +0 −6

drivers/iommu/io-pgtable-arm.c+0−3

@@ -438,9 +438,6 @@ static arm_lpae_iopte arm_lpae_prot_to_pte(struct arm_lpae_io_pgtable *data, · 437 unmodified lines
438	438	else if (prot & IOMMU_CACHE)
439	439	pte \|= (ARM_LPAE_MAIR_ATTR_IDX_CACHE
440	440	<< ARM_LPAE_PTE_ATTRINDX_SHIFT);
441		− else if (prot & IOMMU_SYS_CACHE_ONLY)
442		− pte \|= (ARM_LPAE_MAIR_ATTR_IDX_INC_OCACHE
443		− << ARM_LPAE_PTE_ATTRINDX_SHIFT);
444	441	}
445	442
446	443	if (prot & IOMMU_CACHE)

include/linux/iommu.h+0−6

@@ -31,12 +31,6 @@ · 30 unmodified lines
31	31	* if the IOMMU page table format is equivalent.
32	32	*/
33	33	#define IOMMU_PRIV (1 << 5)
34		−/*
35		− * Non-coherent masters can use this page protection flag to set cacheable
36		− * memory attributes for only a transparent outer level of cache, also known as
37		− * the last-level or system cache.
38		− */
39		−#define IOMMU_SYS_CACHE_ONLY (1 << 6)
40	34
41	35	struct iommu_ops;
42	36	struct iommu_group;