# RE: \[PATCH\] common: dma-mapping: add support for generic dma\_mmap\_\* calls

- From: Marek Szyprowski \<m.szyprowski@samsung.com\>
- Date: 2012-06-29 13:00:58 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2012/06/3886630
- Thread: https://ratatoskr.run/linux-arm-kernel/2012/06/3879839/t.md

```text
Hi,

On Friday, June 29, 2012 1:10 PM Clemens Ladisch wrote:

> Marek Szyprowski wrote:
> > +++ b/drivers/base/dma-mapping.c
> > ...
> > +int dma_common_mmap(struct device *dev, struct vm_area_struct *vma,
> > +		    void *cpu_addr, dma_addr_t dma_addr, size_t size)
> > +{
> > +	int ret = -ENXIO;
> > +	...
> > +	if (dma_mmap_from_coherent(dev, vma, cpu_addr, size, &ret))
> > +		return ret;
> 
> This will return -ENXIO if dma_mmap_from_coherent() succeeds.
 
Thanks for spotting this! I will fix it in the next version of the patch.

Best regards
-- 
Marek Szyprowski
Samsung Poland R&D Center
```