diff options
| author | Benjamin Gaignard <[email protected]> | 2016-12-12 09:31:18 +0100 |
|---|---|---|
| committer | Russell King <[email protected]> | 2017-01-10 23:32:54 +0000 |
| commit | 79964a1c2972ca7ecc231e2d2ac7593a1af73f63 (patch) | |
| tree | 33800f7aaab3f6018a6b9e25d4fc12e282f633ad | |
| parent | 00a19f3e25c0c40e0ec77f52d4841d23ad269169 (diff) | |
ARM: 8633/1: nommu: allow mmap when !CONFIG_MMU
commit ab6494f0c96f ("nommu: Add noMMU support to the DMA API") have
add CONFIG_MMU compilation flag but that prohibit to use dma_mmap_wc()
when the platform doesn't have MMU.
This patch call vm_iomap_memory() in noMMU case to test if addresses
are correct and set vma->vm_flags rather than all return an error.
Signed-off-by: Benjamin Gaignard <[email protected]>
Signed-off-by: Russell King <[email protected]>
| -rw-r--r-- | arch/arm/mm/dma-mapping.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index ab7710002ba6..afa64ed5e36b 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -868,6 +868,9 @@ static int __arm_dma_mmap(struct device *dev, struct vm_area_struct *vma, vma->vm_end - vma->vm_start, vma->vm_page_prot); } +#else + ret = vm_iomap_memory(vma, vma->vm_start, + (vma->vm_end - vma->vm_start)); #endif /* CONFIG_MMU */ return ret; |