Messages in this thread | | | Date | Fri, 29 Jun 2012 13:09:55 +0200 | From | Clemens Ladisch <> | Subject | Re: [PATCH] common: dma-mapping: add support for generic dma_mmap_* calls |
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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.
Regards, Clemens
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