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authorLinus Torvalds <torvalds@linux-foundation.org>2022-12-13 09:05:19 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2022-12-13 09:05:19 -0800
commite529d3507a93d3c9528580081bbaf931a50de154 (patch)
treec363cf495fdbec199a8a9860d8e663389ae8cdd4 /arch/arm/mm
parent6a24711d5c0bc8fb0fc49def433ab89ecbedf095 (diff)
parentffcb754584603adf7039d7972564fbf6febdc542 (diff)
downloadlinux-e529d3507a93d3c9528580081bbaf931a50de154.tar.bz2
Merge tag 'dma-mapping-6.2-2022-12-13' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig: - reduce the swiotlb buffer size on allocation failure (Alexey Kardashevskiy) - clean up passing of bogus GFP flags to the dma-coherent allocator (Christoph Hellwig) * tag 'dma-mapping-6.2-2022-12-13' of git://git.infradead.org/users/hch/dma-mapping: dma-mapping: reject __GFP_COMP in dma_alloc_attrs ALSA: memalloc: don't pass bogus GFP_ flags to dma_alloc_* s390/ism: don't pass bogus GFP_ flags to dma_alloc_coherent cnic: don't pass bogus GFP_ flags to dma_alloc_coherent RDMA/qib: don't pass bogus GFP_ flags to dma_alloc_coherent RDMA/hfi1: don't pass bogus GFP_ flags to dma_alloc_coherent media: videobuf-dma-contig: use dma_mmap_coherent swiotlb: reduce the swiotlb buffer size on allocation failure
Diffstat (limited to 'arch/arm/mm')
-rw-r--r--arch/arm/mm/dma-mapping.c17
1 files changed, 0 insertions, 17 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index d7909091cf97..c135f6e37a00 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -564,14 +564,6 @@ static void *__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
if (mask < 0xffffffffULL)
gfp |= GFP_DMA;
- /*
- * Following is a work-around (a.k.a. hack) to prevent pages
- * with __GFP_COMP being passed to split_page() which cannot
- * handle them. The real problem is that this flag probably
- * should be 0 on ARM as it is not supported on this
- * platform; see CONFIG_HUGETLBFS.
- */
- gfp &= ~(__GFP_COMP);
args.gfp = gfp;
*handle = DMA_MAPPING_ERROR;
@@ -1093,15 +1085,6 @@ static void *arm_iommu_alloc_attrs(struct device *dev, size_t size,
return __iommu_alloc_simple(dev, size, gfp, handle,
coherent_flag, attrs);
- /*
- * Following is a work-around (a.k.a. hack) to prevent pages
- * with __GFP_COMP being passed to split_page() which cannot
- * handle them. The real problem is that this flag probably
- * should be 0 on ARM as it is not supported on this
- * platform; see CONFIG_HUGETLBFS.
- */
- gfp &= ~(__GFP_COMP);
-
pages = __iommu_alloc_buffer(dev, size, gfp, attrs, coherent_flag);
if (!pages)
return NULL;