diff options
| -rw-r--r-- | drivers/base/dma-mapping.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c index 261420ddfe66..2e318ffa019e 100644 --- a/drivers/base/dma-mapping.c +++ b/drivers/base/dma-mapping.c @@ -247,7 +247,7 @@ int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, { int ret = -ENXIO; #if defined(CONFIG_MMU) && !defined(CONFIG_ARCH_NO_COHERENT_DMA_MMAP) - unsigned long user_count = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; + 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; |