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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-30 05:14:55 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-30 05:14:55 -0700 |
| commit | 7b6c81f46c5dd7af316bf09aa1991ceed7e53dcd (patch) | |
| tree | 21e779c6c6d68a41ffd640228359eac060c2e0fe /drivers/base/dma-mapping.c | |
| parent | 0a84bae7edfb44b50978225c6819c59edfebf645 (diff) | |
| parent | 6da6c0db5316275015e8cc2959f12a17584aeb64 (diff) | |
Merge 4.17-rc3 into tty-next
We want the tty and serial driver fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/dma-mapping.c')
| -rw-r--r-- | drivers/base/dma-mapping.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c index 3b118353ea17..d82566d6e237 100644 --- a/drivers/base/dma-mapping.c +++ b/drivers/base/dma-mapping.c @@ -226,7 +226,6 @@ int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, #ifndef CONFIG_ARCH_NO_COHERENT_DMA_MMAP unsigned long user_count = vma_pages(vma); unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT; - unsigned long pfn = page_to_pfn(virt_to_page(cpu_addr)); unsigned long off = vma->vm_pgoff; vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); @@ -234,12 +233,11 @@ int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret)) return ret; - if (off < count && user_count <= (count - off)) { + if (off < count && user_count <= (count - off)) ret = remap_pfn_range(vma, vma->vm_start, - pfn + off, + page_to_pfn(virt_to_page(cpu_addr)) + off, user_count << PAGE_SHIFT, vma->vm_page_prot); - } #endif /* !CONFIG_ARCH_NO_COHERENT_DMA_MMAP */ return ret; |