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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/xtensa
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/xtensa')
-rw-r--r--arch/xtensa/include/asm/device.h2
-rw-r--r--arch/xtensa/include/asm/dma-mapping.h4
-rw-r--r--arch/xtensa/kernel/pci-dma.c2
3 files changed, 4 insertions, 4 deletions
diff --git a/arch/xtensa/include/asm/device.h b/arch/xtensa/include/asm/device.h
index fe1f5c878493..a77d45d39f35 100644
--- a/arch/xtensa/include/asm/device.h
+++ b/arch/xtensa/include/asm/device.h
@@ -10,7 +10,7 @@ struct dma_map_ops;
struct dev_archdata {
/* DMA operations on that device */
- struct dma_map_ops *dma_ops;
+ const struct dma_map_ops *dma_ops;
};
struct pdev_archdata {
diff --git a/arch/xtensa/include/asm/dma-mapping.h b/arch/xtensa/include/asm/dma-mapping.h
index 3fc1170a6488..50d23106cce0 100644
--- a/arch/xtensa/include/asm/dma-mapping.h
+++ b/arch/xtensa/include/asm/dma-mapping.h
@@ -18,9 +18,9 @@
#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
-extern struct dma_map_ops xtensa_dma_map_ops;
+extern const struct dma_map_ops xtensa_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;
diff --git a/arch/xtensa/kernel/pci-dma.c b/arch/xtensa/kernel/pci-dma.c
index 70e362e6038e..ecec5265a66d 100644
--- a/arch/xtensa/kernel/pci-dma.c
+++ b/arch/xtensa/kernel/pci-dma.c
@@ -249,7 +249,7 @@ int xtensa_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
return 0;
}
-struct dma_map_ops xtensa_dma_map_ops = {
+const struct dma_map_ops xtensa_dma_map_ops = {
.alloc = xtensa_dma_alloc,
.free = xtensa_dma_free,
.map_page = xtensa_map_page,