Hello again On Wed, Feb 11, 2015 at 10:00 AM, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> wrote: > Well, this int return value seems to be misleading, but according to > Documentation/DMA-API.txt, the only error value is zero: > > "As with the other mapping interfaces, dma_map_sg() can fail. When it > does, 0 is returned and a driver must take appropriate action. It is > critical that the driver do something, in the case of a block driver > aborting the request or even oopsing is better than doing nothing and > corrupting the filesystem." > > I've also checked various dma-mapping implementation for different > architectures and they follow this convention. > > Maybe one should add some comments to include/linux/dma_mapping.h to > clarify this and avoid further confusion. > > Or maybe change it to unsigned int... Let me redo the patch and resend. I will also try to ping whoever is the maintainer of dma_mapping Thanks! -- Ricardo Ribalda -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
