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 <benjamin.gaignard@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Russell King
parent
00a19f3e25
commit
79964a1c29
@ -868,6 +868,9 @@ static int __arm_dma_mmap(struct device *dev, struct vm_area_struct *vma,
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vma->vm_end - vma->vm_start,
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vma->vm_end - vma->vm_start,
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vma->vm_page_prot);
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vma->vm_page_prot);
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}
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}
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#else
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ret = vm_iomap_memory(vma, vma->vm_start,
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(vma->vm_end - vma->vm_start));
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#endif /* CONFIG_MMU */
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#endif /* CONFIG_MMU */
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return ret;
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return ret;
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