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treewide: Constify most dma_map_ops structures

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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 <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Juergen Gross <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Russell King <[email protected]>
Cc: [email protected]
Signed-off-by: Doug Ledford <[email protected]>
This commit is contained in:
Bart Van Assche 2017-01-20 13:04:01 -08:00 • committed by Doug Ledford
commit 5299709d0a
113 changed files with 227 additions and 227 deletions
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4
arch/sh/include/asm/dma-mapping.h
View file

@ -1,10 +1,10 @@
#ifndef __ASM_SH_DMA_MAPPING_H
#define __ASM_SH_DMA_MAPPING_H
extern struct dma_map_ops *dma_ops;
extern const struct dma_map_ops *dma_ops;
extern void no_iommu_init(void);
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)
{
return dma_ops;
}

2
arch/sh/kernel/dma-nommu.c
View file

@ -65,7 +65,7 @@ static void nommu_sync_sg(struct device *dev, struct scatterlist *sg,
}
#endif
struct dma_map_ops nommu_dma_ops = {
const struct dma_map_ops nommu_dma_ops = {
.alloc = dma_generic_alloc_coherent,
.free = dma_generic_free_coherent,
.map_page = nommu_map_page,

2
arch/sh/mm/consistent.c
View file

@ -22,7 +22,7 @@
#define PREALLOC_DMA_DEBUG_ENTRIES 4096
struct dma_map_ops *dma_ops;
const struct dma_map_ops *dma_ops;
EXPORT_SYMBOL(dma_ops);
static int __init dma_init(void)