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authorBart Van Assche <bart.vanassche@sandisk.com>2017-01-21 00:04:01 +0300
committerDoug Ledford <dledford@redhat.com>2017-01-24 20:23:35 +0300
commit5299709d0a87342dadc1fc9850484fadeb488bf8 (patch)
treea4d866c18765747846a456810ac5f661cecb8fce /arch/tile
parent102c5ce082f557405a0f71ad5a8920f9df50cd9e (diff)
downloadlinux-5299709d0a87342dadc1fc9850484fadeb488bf8.tar.xz
treewide: Constify most dma_map_ops structures
Most dma_map_ops structures are never modified. Constify these structures such that these can be write-protected. This patch has been generated as follows: git grep -l 'struct dma_map_ops' | xargs -d\\n sed -i \ -e 's/struct dma_map_ops/const struct dma_map_ops/g' \ -e 's/const struct dma_map_ops {/struct dma_map_ops {/g' \ -e 's/^const struct dma_map_ops;$/struct dma_map_ops;/' \ -e 's/const const struct dma_map_ops /const struct dma_map_ops /g'; sed -i -e 's/const \(struct dma_map_ops intel_dma_ops\)/\1/' \ $(git grep -l 'struct dma_map_ops intel_dma_ops'); sed -i -e 's/const \(struct dma_map_ops dma_iommu_ops\)/\1/' \ $(git grep -l 'struct dma_map_ops' | grep ^arch/powerpc); sed -i -e '/^struct vmd_dev {$/,/^};$/ s/const \(struct dma_map_ops[[:blank:]]dma_ops;\)/\1/' \ -e '/^static void vmd_setup_dma_ops/,/^}$/ s/const \(struct dma_map_ops \*dest\)/\1/' \ -e 's/const \(struct dma_map_ops \*dest = \&vmd->dma_ops\)/\1/' \ drivers/pci/host/*.c sed -i -e '/^void __init pci_iommu_alloc(void)$/,/^}$/ s/dma_ops->/intel_dma_ops./' arch/ia64/kernel/pci-dma.c sed -i -e 's/static const struct dma_map_ops sn_dma_ops/static struct dma_map_ops sn_dma_ops/' arch/ia64/sn/pci/pci_dma.c sed -i -e 's/(const struct dma_map_ops \*)//' drivers/misc/mic/bus/vop_bus.c Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Juergen Gross <jgross@suse.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-arch@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Russell King <linux@armlinux.org.uk> Cc: x86@kernel.org Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'arch/tile')
-rw-r--r--arch/tile/include/asm/device.h2
-rw-r--r--arch/tile/include/asm/dma-mapping.h12
-rw-r--r--arch/tile/kernel/pci-dma.c24
3 files changed, 19 insertions, 19 deletions
diff --git a/arch/tile/include/asm/device.h b/arch/tile/include/asm/device.h
index 6ab8bf146d4c..25f23ac7d361 100644
--- a/arch/tile/include/asm/device.h
+++ b/arch/tile/include/asm/device.h
@@ -18,7 +18,7 @@
struct dev_archdata {
/* DMA operations on that device */
- struct dma_map_ops *dma_ops;
+ const struct dma_map_ops *dma_ops;
/* Offset of the DMA address from the PA. */
dma_addr_t dma_offset;
diff --git a/arch/tile/include/asm/dma-mapping.h b/arch/tile/include/asm/dma-mapping.h
index 01ceb4a895b0..4a06cc75b856 100644
--- a/arch/tile/include/asm/dma-mapping.h
+++ b/arch/tile/include/asm/dma-mapping.h
@@ -24,12 +24,12 @@
#define ARCH_HAS_DMA_GET_REQUIRED_MASK
#endif
-extern struct dma_map_ops *tile_dma_map_ops;
-extern struct dma_map_ops *gx_pci_dma_map_ops;
-extern struct dma_map_ops *gx_legacy_pci_dma_map_ops;
-extern struct dma_map_ops *gx_hybrid_pci_dma_map_ops;
+extern const struct dma_map_ops *tile_dma_map_ops;
+extern const struct dma_map_ops *gx_pci_dma_map_ops;
+extern const struct dma_map_ops *gx_legacy_pci_dma_map_ops;
+extern const struct dma_map_ops *gx_hybrid_pci_dma_map_ops;
-static inline struct dma_map_ops *get_dma_ops(struct device *dev)
+static inline const struct dma_map_ops *get_dma_ops(struct device *dev)
{
if (dev && dev->archdata.dma_ops)
return dev->archdata.dma_ops;
@@ -59,7 +59,7 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
static inline void dma_mark_clean(void *addr, size_t size) {}
-static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops)
+static inline void set_dma_ops(struct device *dev, const struct dma_map_ops *ops)
{
dev->archdata.dma_ops = ops;
}
diff --git a/arch/tile/kernel/pci-dma.c b/arch/tile/kernel/pci-dma.c
index 24e0f8c21f2f..569bb6dd154a 100644
--- a/arch/tile/kernel/pci-dma.c
+++ b/arch/tile/kernel/pci-dma.c
@@ -329,7 +329,7 @@ tile_dma_supported(struct device *dev, u64 mask)
return 1;
}
-static struct dma_map_ops tile_default_dma_map_ops = {
+static const struct dma_map_ops tile_default_dma_map_ops = {
.alloc = tile_dma_alloc_coherent,
.free = tile_dma_free_coherent,
.map_page = tile_dma_map_page,
@@ -344,7 +344,7 @@ static struct dma_map_ops tile_default_dma_map_ops = {
.dma_supported = tile_dma_supported
};
-struct dma_map_ops *tile_dma_map_ops = &tile_default_dma_map_ops;
+const struct dma_map_ops *tile_dma_map_ops = &tile_default_dma_map_ops;
EXPORT_SYMBOL(tile_dma_map_ops);
/* Generic PCI DMA mapping functions */
@@ -516,7 +516,7 @@ tile_pci_dma_supported(struct device *dev, u64 mask)
return 1;
}
-static struct dma_map_ops tile_pci_default_dma_map_ops = {
+static const struct dma_map_ops tile_pci_default_dma_map_ops = {
.alloc = tile_pci_dma_alloc_coherent,
.free = tile_pci_dma_free_coherent,
.map_page = tile_pci_dma_map_page,
@@ -531,7 +531,7 @@ static struct dma_map_ops tile_pci_default_dma_map_ops = {
.dma_supported = tile_pci_dma_supported
};
-struct dma_map_ops *gx_pci_dma_map_ops = &tile_pci_default_dma_map_ops;
+const struct dma_map_ops *gx_pci_dma_map_ops = &tile_pci_default_dma_map_ops;
EXPORT_SYMBOL(gx_pci_dma_map_ops);
/* PCI DMA mapping functions for legacy PCI devices */
@@ -552,7 +552,7 @@ static void tile_swiotlb_free_coherent(struct device *dev, size_t size,
swiotlb_free_coherent(dev, size, vaddr, dma_addr);
}
-static struct dma_map_ops pci_swiotlb_dma_ops = {
+static const struct dma_map_ops pci_swiotlb_dma_ops = {
.alloc = tile_swiotlb_alloc_coherent,
.free = tile_swiotlb_free_coherent,
.map_page = swiotlb_map_page,
@@ -567,7 +567,7 @@ static struct dma_map_ops pci_swiotlb_dma_ops = {
.mapping_error = swiotlb_dma_mapping_error,
};
-static struct dma_map_ops pci_hybrid_dma_ops = {
+static const struct dma_map_ops pci_hybrid_dma_ops = {
.alloc = tile_swiotlb_alloc_coherent,
.free = tile_swiotlb_free_coherent,
.map_page = tile_pci_dma_map_page,
@@ -582,18 +582,18 @@ static struct dma_map_ops pci_hybrid_dma_ops = {
.dma_supported = tile_pci_dma_supported
};
-struct dma_map_ops *gx_legacy_pci_dma_map_ops = &pci_swiotlb_dma_ops;
-struct dma_map_ops *gx_hybrid_pci_dma_map_ops = &pci_hybrid_dma_ops;
+const struct dma_map_ops *gx_legacy_pci_dma_map_ops = &pci_swiotlb_dma_ops;
+const struct dma_map_ops *gx_hybrid_pci_dma_map_ops = &pci_hybrid_dma_ops;
#else
-struct dma_map_ops *gx_legacy_pci_dma_map_ops;
-struct dma_map_ops *gx_hybrid_pci_dma_map_ops;
+const struct dma_map_ops *gx_legacy_pci_dma_map_ops;
+const struct dma_map_ops *gx_hybrid_pci_dma_map_ops;
#endif
EXPORT_SYMBOL(gx_legacy_pci_dma_map_ops);
EXPORT_SYMBOL(gx_hybrid_pci_dma_map_ops);
int dma_set_mask(struct device *dev, u64 mask)
{
- struct dma_map_ops *dma_ops = get_dma_ops(dev);
+ const struct dma_map_ops *dma_ops = get_dma_ops(dev);
/*
* For PCI devices with 64-bit DMA addressing capability, promote
@@ -623,7 +623,7 @@ EXPORT_SYMBOL(dma_set_mask);
#ifdef CONFIG_ARCH_HAS_DMA_SET_COHERENT_MASK
int dma_set_coherent_mask(struct device *dev, u64 mask)
{
- struct dma_map_ops *dma_ops = get_dma_ops(dev);
+ const struct dma_map_ops *dma_ops = get_dma_ops(dev);
/*
* For PCI devices with 64-bit DMA addressing capability, promote