The patch titled
Subject: ARM: dma-mapping: constify attrs passed to internal functions
has been added to the -mm tree. Its filename is
arm-dma-mapping-constify-attrs-passed-to-internal-functions.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/arm-dma-mapping-constify-attrs-passed-to-internal-functions.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/arm-dma-mapping-constify-attrs-passed-to-internal-functions.patch
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------------------------------------------------------
From: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
Subject: ARM: dma-mapping: constify attrs passed to internal functions
Some of the non-exported functions do not modify passed dma_attrs so the
pointer can point to const data.
Link: http://lkml.kernel.org/r/1464071290-15948-3-git-send-email-k.kozlowski@xxxxxxxxxxx
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
Acked-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxx>
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Joerg Roedel <joro@xxxxxxxxxx>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm/mm/dma-mapping.c | 26 ++++++++++++++------------
1 file changed, 14 insertions(+), 12 deletions(-)
diff -puN arch/arm/mm/dma-mapping.c~arm-dma-mapping-constify-attrs-passed-to-internal-functions arch/arm/mm/dma-mapping.c
--- a/arch/arm/mm/dma-mapping.c~arm-dma-mapping-constify-attrs-passed-to-internal-functions
+++ a/arch/arm/mm/dma-mapping.c
@@ -621,7 +621,7 @@ static void __free_from_contiguous(struc
dma_release_from_contiguous(dev, page, size >> PAGE_SHIFT);
}
-static inline pgprot_t __get_dma_pgprot(struct dma_attrs *attrs, pgprot_t prot)
+static inline pgprot_t __get_dma_pgprot(const struct dma_attrs *attrs, pgprot_t prot)
{
prot = dma_get_attr(DMA_ATTR_WRITE_COMBINE, attrs) ?
pgprot_writecombine(prot) :
@@ -732,7 +732,7 @@ static struct arm_dma_allocator remap_al
static void *__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
gfp_t gfp, pgprot_t prot, bool is_coherent,
- struct dma_attrs *attrs, const void *caller)
+ const struct dma_attrs *attrs, const void *caller)
{
u64 mask = get_coherent_dma_mask(dev);
struct page *page = NULL;
@@ -878,7 +878,7 @@ int arm_dma_mmap(struct device *dev, str
* Free a buffer as defined by the above mapping.
*/
static void __arm_dma_free(struct device *dev, size_t size, void *cpu_addr,
- dma_addr_t handle, struct dma_attrs *attrs,
+ dma_addr_t handle, const struct dma_attrs *attrs,
bool is_coherent)
{
struct page *page = pfn_to_page(dma_to_pfn(dev, handle));
@@ -1253,7 +1253,8 @@ static inline void __free_iova(struct dm
static const int iommu_order_array[] = { 9, 8, 4, 0 };
static struct page **__iommu_alloc_buffer(struct device *dev, size_t size,
- gfp_t gfp, struct dma_attrs *attrs)
+ gfp_t gfp,
+ const struct dma_attrs *attrs)
{
struct page **pages;
int count = size >> PAGE_SHIFT;
@@ -1342,7 +1343,7 @@ error:
}
static int __iommu_free_buffer(struct device *dev, struct page **pages,
- size_t size, struct dma_attrs *attrs)
+ size_t size, const struct dma_attrs *attrs)
{
int count = size >> PAGE_SHIFT;
int i;
@@ -1439,7 +1440,8 @@ static struct page **__atomic_get_pages(
return (struct page **)page;
}
-static struct page **__iommu_get_pages(void *cpu_addr, struct dma_attrs *attrs)
+static struct page **__iommu_get_pages(void *cpu_addr,
+ const struct dma_attrs *attrs)
{
struct vm_struct *area;
@@ -1633,8 +1635,8 @@ static int __dma_direction_to_prot(enum
*/
static int __map_sg_chunk(struct device *dev, struct scatterlist *sg,
size_t size, dma_addr_t *handle,
- enum dma_data_direction dir, struct dma_attrs *attrs,
- bool is_coherent)
+ enum dma_data_direction dir,
+ const struct dma_attrs *attrs, bool is_coherent)
{
struct dma_iommu_mapping *mapping = to_dma_iommu_mapping(dev);
dma_addr_t iova, iova_base;
@@ -1676,8 +1678,8 @@ fail:
}
static int __iommu_map_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction dir, struct dma_attrs *attrs,
- bool is_coherent)
+ enum dma_data_direction dir,
+ const struct dma_attrs *attrs, bool is_coherent)
{
struct scatterlist *s = sg, *dma = sg, *start = sg;
int i, count = 0;
@@ -1758,8 +1760,8 @@ int arm_iommu_map_sg(struct device *dev,
}
static void __iommu_unmap_sg(struct device *dev, struct scatterlist *sg,
- int nents, enum dma_data_direction dir, struct dma_attrs *attrs,
- bool is_coherent)
+ int nents, enum dma_data_direction dir,
+ const struct dma_attrs *attrs, bool is_coherent)
{
struct scatterlist *s;
int i;
_
Patches currently in -mm which might be from k.kozlowski@xxxxxxxxxxx are
dma-mapping-constify-attrs-passed-to-dma_get_attr.patch
arm-dma-mapping-constify-attrs-passed-to-internal-functions.patch
arm64-dma-mapping-constify-attrs-passed-to-internal-functions.patch
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