# \[PATCH v2 4/7\] of/device: Set bus DMA mask as appropriate

- From: Christoph Hellwig \<hch@lst.de\>
- Date: 2018-07-25 11:30:00 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2018/07/8771518
- Thread: https://ratatoskr.run/linux-arm-kernel/2018/07/8771456/t.md

```text
On Mon, Jul 23, 2018 at 11:16:09PM +0100, Robin Murphy wrote:
> When an explicit DMA limit is described by firmware, we need to remember
> it regardless of how drivers might subsequently update their devices'
> masks. The new bus_dma_mask field does that.

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>
```