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arm-nommu: call dma_mmap_from_dev_coherent directly 

There is no need to go through dma_common_mmap for the arm-nommu
dma mmap implementation as the only possible memory not handled above
could be that from the per-device coherent pool.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2019-08-07 13:55:01 +03:00
parent 425da15970
commit 07d841a625
1 changed files with 3 additions and 2 deletions
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5
arch/arm/mm/dma-mapping-nommu.c
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@ -68,8 +68,9 @@ static int arm_nommu_dma_mmap(struct device *dev, struct vm_area_struct *vma,
if (dma_mmap_from_global_coherent(vma, cpu_addr, size, &ret))
return ret;
return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size, attrs);
if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret))
return ret;
return -ENXIO;
}