Messages in this thread Patch in this message | | | From | Bhumika Goyal <> | Subject | [PATCH] drivers: iommu: constify iommu_gather_ops structures | Date | Tue, 25 Oct 2016 21:03:44 +0530 |
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Check for iommu_gather_ops structures that are only stored in the tlb field of an io_pgtable_cfg structure. The tlb field is of type const struct iommu_gather_ops *, so iommu_gather_ops structures having this property can be declared as const. Done using Coccinelle:
@r1 disable optional_qualifier @ identifier i; position p; @@ static struct iommu_gather_ops i@p = {...};
@ok1@ identifier r1.i; position p; struct io_pgtable_cfg q; @@ q.tlb=&i@p;
@bad@ position p!={r1.p,ok1.p}; identifier r1.i; @@ i@p
@depends on !bad disable optional_qualifier@ identifier r1.i; @@ static +const struct iommu_gather_ops i={...};
@depends on !bad disable optional_qualifier@ identifier r1.i; @@ +const struct iommu_gather_ops i;
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> --- drivers/iommu/io-pgtable-arm-v7s.c | 2 +- drivers/iommu/ipmmu-vmsa.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c index f50e51c..1465bbc 100644 --- a/drivers/iommu/io-pgtable-arm-v7s.c +++ b/drivers/iommu/io-pgtable-arm-v7s.c @@ -741,7 +741,7 @@ static void dummy_tlb_sync(void *cookie) WARN_ON(cookie != cfg_cookie); } -static struct iommu_gather_ops dummy_tlb_ops = { +static const struct iommu_gather_ops dummy_tlb_ops = { .tlb_flush_all = dummy_tlb_flush_all, .tlb_add_flush = dummy_tlb_add_flush, .tlb_sync = dummy_tlb_sync, diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index ace331d..b8bcf18 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -283,7 +283,7 @@ static void ipmmu_tlb_add_flush(unsigned long iova, size_t size, /* The hardware doesn't support selective TLB flush. */ } -static struct iommu_gather_ops ipmmu_gather_ops = { +static const struct iommu_gather_ops ipmmu_gather_ops = { .tlb_flush_all = ipmmu_tlb_flush_all, .tlb_add_flush = ipmmu_tlb_add_flush, .tlb_sync = ipmmu_tlb_flush_all, -- 1.9.1
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