Re: [RFC v3 02/45] dma-mapping: Use unsigned long for dma_attrs

Hi Krzysztof, On Thu, Jun 2, 2016 at 5:39 PM, Krzysztof Kozlowski wrote: > --- a/include/linux/dma-mapping.h > +++ b/include/linux/dma-mapping.h > @@ -5,13 +5,25 @@ > +/** > + * List of possible attributes associated with a DMA mapping. The semantics > + * of each

Re: [RFC v3 02/45] dma-mapping: Use unsigned long for dma_attrs

On 06/03/2016 09:17 AM, Geert Uytterhoeven wrote: > Hi Krzysztof, > > On Thu, Jun 2, 2016 at 5:39 PM, Krzysztof Kozlowski > wrote: >> --- a/include/linux/dma-mapping.h >> +++ b/include/linux/dma-mapping.h >> @@ -5,13 +5,25 @@ > >> +/** >> + * List of possible attributes

[RFC v3 02/45] dma-mapping: Use unsigned long for dma_attrs

The dma-mapping core and the implementations do not change the DMA attributes passed by pointer. Thus the pointer can point to const data. However the attributes do not have to be a bitfield. Instead unsigned long will do fine: 1. This is just simpler. Both in terms of reading the code and