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Subject[PATCH] [1/22] x86_64: dma_ops as const
Date

From: Stephen Hemminger <shemminger@linux-foundation.org>
The dma_ops structure can be const since it never changes
after boot.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Andi Kleen <ak@suse.de>

---
arch/x86_64/kernel/pci-calgary.c | 2 +-
arch/x86_64/kernel/pci-gart.c | 2 +-
arch/x86_64/kernel/pci-nommu.c | 2 +-
arch/x86_64/kernel/pci-swiotlb.c | 2 +-
arch/x86_64/mm/init.c | 2 +-
include/asm-x86_64/dma-mapping.h | 2 +-
6 files changed, 6 insertions(+), 6 deletions(-)

Index: linux/arch/x86_64/kernel/pci-calgary.c
===================================================================
--- linux.orig/arch/x86_64/kernel/pci-calgary.c
+++ linux/arch/x86_64/kernel/pci-calgary.c
@@ -507,7 +507,7 @@ error:
return ret;
}

-static struct dma_mapping_ops calgary_dma_ops = {
+static const struct dma_mapping_ops calgary_dma_ops = {
.alloc_coherent = calgary_alloc_coherent,
.map_single = calgary_map_single,
.unmap_single = calgary_unmap_single,
Index: linux/arch/x86_64/kernel/pci-gart.c
===================================================================
--- linux.orig/arch/x86_64/kernel/pci-gart.c
+++ linux/arch/x86_64/kernel/pci-gart.c
@@ -556,7 +556,7 @@ static __init int init_k8_gatt(struct ag

extern int agp_amd64_init(void);

-static struct dma_mapping_ops gart_dma_ops = {
+static const struct dma_mapping_ops gart_dma_ops = {
.mapping_error = NULL,
.map_single = gart_map_single,
.map_simple = gart_map_simple,
Index: linux/arch/x86_64/kernel/pci-nommu.c
===================================================================
--- linux.orig/arch/x86_64/kernel/pci-nommu.c
+++ linux/arch/x86_64/kernel/pci-nommu.c
@@ -79,7 +79,7 @@ void nommu_unmap_sg(struct device *dev,
{
}

-struct dma_mapping_ops nommu_dma_ops = {
+const struct dma_mapping_ops nommu_dma_ops = {
.map_single = nommu_map_single,
.unmap_single = nommu_unmap_single,
.map_sg = nommu_map_sg,
Index: linux/arch/x86_64/kernel/pci-swiotlb.c
===================================================================
--- linux.orig/arch/x86_64/kernel/pci-swiotlb.c
+++ linux/arch/x86_64/kernel/pci-swiotlb.c
@@ -12,7 +12,7 @@
int swiotlb __read_mostly;
EXPORT_SYMBOL(swiotlb);

-struct dma_mapping_ops swiotlb_dma_ops = {
+const struct dma_mapping_ops swiotlb_dma_ops = {
.mapping_error = swiotlb_dma_mapping_error,
.alloc_coherent = swiotlb_alloc_coherent,
.free_coherent = swiotlb_free_coherent,
Index: linux/arch/x86_64/mm/init.c
===================================================================
--- linux.orig/arch/x86_64/mm/init.c
+++ linux/arch/x86_64/mm/init.c
@@ -46,7 +46,7 @@
#define Dprintk(x...)
#endif

-struct dma_mapping_ops* dma_ops;
+const struct dma_mapping_ops* dma_ops;
EXPORT_SYMBOL(dma_ops);

static unsigned long dma_reserve __initdata;
Index: linux/include/asm-x86_64/dma-mapping.h
===================================================================
--- linux.orig/include/asm-x86_64/dma-mapping.h
+++ linux/include/asm-x86_64/dma-mapping.h
@@ -52,7 +52,7 @@ struct dma_mapping_ops {
};

extern dma_addr_t bad_dma_address;
-extern struct dma_mapping_ops* dma_ops;
+extern const struct dma_mapping_ops* dma_ops;
extern int iommu_merge;

static inline int dma_mapping_error(dma_addr_t dma_addr)
-
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