From 5299709d0a87342dadc1fc9850484fadeb488bf8 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Fri, 20 Jan 2017 13:04:01 -0800 Subject: 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 Reviewed-by: Christoph Hellwig Cc: Benjamin Herrenschmidt Cc: Boris Ostrovsky Cc: David Woodhouse Cc: Juergen Gross Cc: H. Peter Anvin Cc: Ingo Molnar Cc: linux-arch@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Russell King Cc: x86@kernel.org Signed-off-by: Doug Ledford --- arch/sparc/include/asm/dma-mapping.h | 8 ++++---- arch/sparc/kernel/iommu.c | 4 ++-- arch/sparc/kernel/ioport.c | 8 ++++---- arch/sparc/kernel/pci_sun4v.c | 2 +- 4 files changed, 11 insertions(+), 11 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h index 1180ae254154..3d2babc0c4c6 100644 --- a/arch/sparc/include/asm/dma-mapping.h +++ b/arch/sparc/include/asm/dma-mapping.h @@ -18,13 +18,13 @@ static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, */ } -extern struct dma_map_ops *dma_ops; -extern struct dma_map_ops *leon_dma_ops; -extern struct dma_map_ops pci32_dma_ops; +extern const struct dma_map_ops *dma_ops; +extern const struct dma_map_ops *leon_dma_ops; +extern const struct dma_map_ops pci32_dma_ops; extern struct bus_type pci_bus_type; -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) { #ifdef CONFIG_SPARC_LEON if (sparc_cpu_model == sparc_leon) diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c index 9df997995f6b..c63ba99ca551 100644 --- a/arch/sparc/kernel/iommu.c +++ b/arch/sparc/kernel/iommu.c @@ -741,7 +741,7 @@ static void dma_4u_sync_sg_for_cpu(struct device *dev, spin_unlock_irqrestore(&iommu->lock, flags); } -static struct dma_map_ops sun4u_dma_ops = { +static const struct dma_map_ops sun4u_dma_ops = { .alloc = dma_4u_alloc_coherent, .free = dma_4u_free_coherent, .map_page = dma_4u_map_page, @@ -752,7 +752,7 @@ static struct dma_map_ops sun4u_dma_ops = { .sync_sg_for_cpu = dma_4u_sync_sg_for_cpu, }; -struct dma_map_ops *dma_ops = &sun4u_dma_ops; +const struct dma_map_ops *dma_ops = &sun4u_dma_ops; EXPORT_SYMBOL(dma_ops); int dma_supported(struct device *dev, u64 device_mask) diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c index 6ffaec44931a..cf20033a1458 100644 --- a/arch/sparc/kernel/ioport.c +++ b/arch/sparc/kernel/ioport.c @@ -401,7 +401,7 @@ static void sbus_sync_sg_for_device(struct device *dev, struct scatterlist *sg, BUG(); } -static struct dma_map_ops sbus_dma_ops = { +static const struct dma_map_ops sbus_dma_ops = { .alloc = sbus_alloc_coherent, .free = sbus_free_coherent, .map_page = sbus_map_page, @@ -637,7 +637,7 @@ static void pci32_sync_sg_for_device(struct device *device, struct scatterlist * } } -struct dma_map_ops pci32_dma_ops = { +const struct dma_map_ops pci32_dma_ops = { .alloc = pci32_alloc_coherent, .free = pci32_free_coherent, .map_page = pci32_map_page, @@ -652,10 +652,10 @@ struct dma_map_ops pci32_dma_ops = { EXPORT_SYMBOL(pci32_dma_ops); /* leon re-uses pci32_dma_ops */ -struct dma_map_ops *leon_dma_ops = &pci32_dma_ops; +const struct dma_map_ops *leon_dma_ops = &pci32_dma_ops; EXPORT_SYMBOL(leon_dma_ops); -struct dma_map_ops *dma_ops = &sbus_dma_ops; +const struct dma_map_ops *dma_ops = &sbus_dma_ops; EXPORT_SYMBOL(dma_ops); diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c index f4daccd12bf5..68bec7c97cb8 100644 --- a/arch/sparc/kernel/pci_sun4v.c +++ b/arch/sparc/kernel/pci_sun4v.c @@ -669,7 +669,7 @@ static void dma_4v_unmap_sg(struct device *dev, struct scatterlist *sglist, local_irq_restore(flags); } -static struct dma_map_ops sun4v_dma_ops = { +static const struct dma_map_ops sun4v_dma_ops = { .alloc = dma_4v_alloc_coherent, .free = dma_4v_free_coherent, .map_page = dma_4v_map_page, -- cgit v1.2.3