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authorLinus Torvalds <torvalds@linux-foundation.org>2022-03-29 08:50:14 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-03-29 08:50:14 -0700
commit9ae2a143081fa8fba5042431007b33d9a855b7a2 (patch)
tree5c0bdc32eaa7b323059cbf2dab1aa96a5141309a /drivers/iommu
parent37fcacb50be7071d146144a6c5c5bf0194b9a1cf (diff)
parent8ddde07a3d285a0f3cec14924446608320fdc013 (diff)
downloadlinux-9ae2a143081fa8fba5042431007b33d9a855b7a2.tar.bz2
Merge tag 'dma-mapping-5.18' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig: - do not zero buffer in set_memory_decrypted (Kirill A. Shutemov) - fix return value of dma-debug __setup handlers (Randy Dunlap) - swiotlb cleanups (Robin Murphy) - remove most remaining users of the pci-dma-compat.h API (Christophe JAILLET) - share the ABI header for the DMA map_benchmark with userspace (Tian Tao) - update the maintainer for DMA MAPPING BENCHMARK (Xiang Chen) - remove CONFIG_DMA_REMAP (me) * tag 'dma-mapping-5.18' of git://git.infradead.org/users/hch/dma-mapping: dma-mapping: benchmark: extract a common header file for map_benchmark definition dma-debug: fix return value of __setup handlers dma-mapping: remove CONFIG_DMA_REMAP media: v4l2-pci-skeleton: Remove usage of the deprecated "pci-dma-compat.h" API rapidio/tsi721: Remove usage of the deprecated "pci-dma-compat.h" API sparc: Remove usage of the deprecated "pci-dma-compat.h" API agp/intel: Remove usage of the deprecated "pci-dma-compat.h" API alpha: Remove usage of the deprecated "pci-dma-compat.h" API MAINTAINERS: update maintainer list of DMA MAPPING BENCHMARK swiotlb: simplify array allocation swiotlb: tidy up includes swiotlb: simplify debugfs setup swiotlb: do not zero buffer in set_memory_decrypted()
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/dma-iommu.c14
1 files changed, 5 insertions, 9 deletions
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index b22034975301..09f6e1c0f9c0 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -856,7 +856,6 @@ out_unmap:
return NULL;
}
-#ifdef CONFIG_DMA_REMAP
static struct sg_table *iommu_dma_alloc_noncontiguous(struct device *dev,
size_t size, enum dma_data_direction dir, gfp_t gfp,
unsigned long attrs)
@@ -886,7 +885,6 @@ static void iommu_dma_free_noncontiguous(struct device *dev, size_t size,
sg_free_table(&sh->sgt);
kfree(sh);
}
-#endif /* CONFIG_DMA_REMAP */
static void iommu_dma_sync_single_for_cpu(struct device *dev,
dma_addr_t dma_handle, size_t size, enum dma_data_direction dir)
@@ -1280,7 +1278,7 @@ static void __iommu_dma_free(struct device *dev, size_t size, void *cpu_addr)
dma_free_from_pool(dev, cpu_addr, alloc_size))
return;
- if (IS_ENABLED(CONFIG_DMA_REMAP) && is_vmalloc_addr(cpu_addr)) {
+ if (is_vmalloc_addr(cpu_addr)) {
/*
* If it the address is remapped, then it's either non-coherent
* or highmem CMA, or an iommu_dma_alloc_remap() construction.
@@ -1322,7 +1320,7 @@ static void *iommu_dma_alloc_pages(struct device *dev, size_t size,
if (!page)
return NULL;
- if (IS_ENABLED(CONFIG_DMA_REMAP) && (!coherent || PageHighMem(page))) {
+ if (!coherent || PageHighMem(page)) {
pgprot_t prot = dma_pgprot(dev, PAGE_KERNEL, attrs);
cpu_addr = dma_common_contiguous_remap(page, alloc_size,
@@ -1354,7 +1352,7 @@ static void *iommu_dma_alloc(struct device *dev, size_t size,
gfp |= __GFP_ZERO;
- if (IS_ENABLED(CONFIG_DMA_REMAP) && gfpflags_allow_blocking(gfp) &&
+ if (gfpflags_allow_blocking(gfp) &&
!(attrs & DMA_ATTR_FORCE_CONTIGUOUS)) {
return iommu_dma_alloc_remap(dev, size, handle, gfp,
dma_pgprot(dev, PAGE_KERNEL, attrs), attrs);
@@ -1395,7 +1393,7 @@ static int iommu_dma_mmap(struct device *dev, struct vm_area_struct *vma,
if (off >= nr_pages || vma_pages(vma) > nr_pages - off)
return -ENXIO;
- if (IS_ENABLED(CONFIG_DMA_REMAP) && is_vmalloc_addr(cpu_addr)) {
+ if (is_vmalloc_addr(cpu_addr)) {
struct page **pages = dma_common_find_pages(cpu_addr);
if (pages)
@@ -1417,7 +1415,7 @@ static int iommu_dma_get_sgtable(struct device *dev, struct sg_table *sgt,
struct page *page;
int ret;
- if (IS_ENABLED(CONFIG_DMA_REMAP) && is_vmalloc_addr(cpu_addr)) {
+ if (is_vmalloc_addr(cpu_addr)) {
struct page **pages = dma_common_find_pages(cpu_addr);
if (pages) {
@@ -1449,10 +1447,8 @@ static const struct dma_map_ops iommu_dma_ops = {
.free = iommu_dma_free,
.alloc_pages = dma_common_alloc_pages,
.free_pages = dma_common_free_pages,
-#ifdef CONFIG_DMA_REMAP
.alloc_noncontiguous = iommu_dma_alloc_noncontiguous,
.free_noncontiguous = iommu_dma_free_noncontiguous,
-#endif
.mmap = iommu_dma_mmap,
.get_sgtable = iommu_dma_get_sgtable,
.map_page = iommu_dma_map_page,