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/arm64/mm/dma-mapping.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/arm64/mm') diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c index e04082700bb1..bcef6368d48f 100644 --- a/arch/arm64/mm/dma-mapping.c +++ b/arch/arm64/mm/dma-mapping.c @@ -352,7 +352,7 @@ static int __swiotlb_dma_supported(struct device *hwdev, u64 mask) return 1; } -static struct dma_map_ops swiotlb_dma_ops = { +static const struct dma_map_ops swiotlb_dma_ops = { .alloc = __dma_alloc, .free = __dma_free, .mmap = __swiotlb_mmap, @@ -505,7 +505,7 @@ static int __dummy_dma_supported(struct device *hwdev, u64 mask) return 0; } -struct dma_map_ops dummy_dma_ops = { +const struct dma_map_ops dummy_dma_ops = { .alloc = __dummy_alloc, .free = __dummy_free, .mmap = __dummy_mmap, @@ -784,7 +784,7 @@ static void __iommu_unmap_sg_attrs(struct device *dev, iommu_dma_unmap_sg(dev, sgl, nelems, dir, attrs); } -static struct dma_map_ops iommu_dma_ops = { +static const struct dma_map_ops iommu_dma_ops = { .alloc = __iommu_alloc_attrs, .free = __iommu_free_attrs, .mmap = __iommu_mmap_attrs, -- cgit v1.2.3 From 5657933dbb6e25feaf5d8df8c88f96cdade693a3 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Fri, 20 Jan 2017 13:04:02 -0800 Subject: treewide: Move dma_ops from struct dev_archdata into struct device Some but not all architectures provide set_dma_ops(). Move dma_ops from struct dev_archdata into struct device such that it becomes possible on all architectures to configure dma_ops per device. Signed-off-by: Bart Van Assche Acked-by: Greg Kroah-Hartman 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/arm64/mm/dma-mapping.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'arch/arm64/mm') diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c index bcef6368d48f..dbab4c6c084b 100644 --- a/arch/arm64/mm/dma-mapping.c +++ b/arch/arm64/mm/dma-mapping.c @@ -837,7 +837,7 @@ static bool do_iommu_attach(struct device *dev, const struct iommu_ops *ops, return false; } - dev->archdata.dma_ops = &iommu_dma_ops; + dev->dma_ops = &iommu_dma_ops; return true; } @@ -941,7 +941,7 @@ static void __iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, void arch_teardown_dma_ops(struct device *dev) { - dev->archdata.dma_ops = NULL; + dev->dma_ops = NULL; } #else @@ -955,8 +955,8 @@ static void __iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, const struct iommu_ops *iommu, bool coherent) { - if (!dev->archdata.dma_ops) - dev->archdata.dma_ops = &swiotlb_dma_ops; + if (!dev->dma_ops) + dev->dma_ops = &swiotlb_dma_ops; dev->archdata.dma_coherent = coherent; __iommu_setup_dma_ops(dev, dma_base, size, iommu); -- cgit v1.2.3