diff options
| author | Will Deacon <will@kernel.org> | 2020-06-04 18:11:15 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-07-08 21:37:27 +0100 |
| commit | ecd7274fb4cd2d6c035a52d59ca3d6ec936a07be (patch) | |
| tree | fa28ab324167376d340c40a5b70aae5b48da5fbb | |
| parent | 9ebcfadb0610322ac537dd7aa5d9cbc2b2894c68 (diff) | |
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.
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: "Isaac J. Manjarres" <isaacm@codeaurora.org>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Rob Clark <robdclark@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Signed-off-by: Will Deacon <will@kernel.org>
| -rw-r--r-- | drivers/iommu/io-pgtable-arm.c | 3 | ||||
| -rw-r--r-- | include/linux/iommu.h | 6 |
2 files changed, 0 insertions, 9 deletions
diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c index 04fbd4bf0ff9..8f175c02f8e3 100644 --- a/drivers/iommu/io-pgtable-arm.c +++ b/drivers/iommu/io-pgtable-arm.c @@ -438,9 +438,6 @@ static arm_lpae_iopte arm_lpae_prot_to_pte(struct arm_lpae_io_pgtable *data, else if (prot & IOMMU_CACHE) pte |= (ARM_LPAE_MAIR_ATTR_IDX_CACHE << ARM_LPAE_PTE_ATTRINDX_SHIFT); - else if (prot & IOMMU_SYS_CACHE_ONLY) - pte |= (ARM_LPAE_MAIR_ATTR_IDX_INC_OCACHE - << ARM_LPAE_PTE_ATTRINDX_SHIFT); } if (prot & IOMMU_CACHE) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 5f0b7859d2eb..bee1a8fa1fb1 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -31,12 +31,6 @@ * if the IOMMU page table format is equivalent. */ #define IOMMU_PRIV (1 << 5) -/* - * Non-coherent masters can use this page protection flag to set cacheable - * memory attributes for only a transparent outer level of cache, also known as - * the last-level or system cache. - */ -#define IOMMU_SYS_CACHE_ONLY (1 << 6) struct iommu_ops; struct iommu_group; |