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dma-iommu: remove __iommu_dma_mmap

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The function has a single caller, so open code it there and take
advantage of the precalculated page count variable.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20201209112019.2625029-1-hch@lst.de
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Christoph Hellwig 2020-12-09 12:20:19 +01:00 committed by Will Deacon
parent fefe8527a1
commit 71fe89ceb5
1 changed files with 1 additions and 16 deletions
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17
drivers/iommu/dma-iommu.c
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@ -752,21 +752,6 @@ out_free_pages:
return NULL;
}
/**
* __iommu_dma_mmap - Map a buffer into provided user VMA
* @pages: Array representing buffer from __iommu_dma_alloc()
* @size: Size of buffer in bytes
* @vma: VMA describing requested userspace mapping
*
* Maps the pages of the buffer in @pages into @vma. The caller is responsible
* for verifying the correct size and protection of @vma beforehand.
*/
static int __iommu_dma_mmap(struct page **pages, size_t size,
struct vm_area_struct *vma)
{
return vm_map_pages(vma, pages, PAGE_ALIGN(size) >> PAGE_SHIFT);
}
static void iommu_dma_sync_single_for_cpu(struct device *dev,
dma_addr_t dma_handle, size_t size, enum dma_data_direction dir)
{
@ -1287,7 +1272,7 @@ static int iommu_dma_mmap(struct device *dev, struct vm_area_struct *vma,
struct page **pages = dma_common_find_pages(cpu_addr);
if (pages)
return __iommu_dma_mmap(pages, size, vma);
return vm_map_pages(vma, pages, nr_pages);
pfn = vmalloc_to_pfn(cpu_addr);
} else {
pfn = page_to_pfn(virt_to_page(cpu_addr));