Hi Konrad, Thanks for your feedback.
On 2016-05-17 10:54:45 -0400, Konrad Rzeszutek Wilk wrote: > > > > -In some circumstances dma_map_single() and dma_map_page() will fail to > > create > > -a mapping. A driver can check for these errors by testing the returned > > -DMA address with dma_mapping_error(). A non-zero return value means the > > mapping > > -could not be created and the driver should take appropriate action (e.g. > > -reduce current DMA mapping usage or delay and try again later). > > +In some circumstances dma_map_single(), dma_map_page() and > > dma_map_resource() > > +will fail to create a mapping. A driver can check for these errors by > > testing > > +the returned DMA address with dma_mapping_error(). A non-zero return value > > +means the mapping could not be created and the driver should take > > appropriate > > +action (e.g. reduce current DMA mapping usage or delay and try again > > later). > > This looks like it belongs to another patch? No it is correct (at least intended to be in this patch). All it really do is inject dma_map_resource() (which is added in this patch) as one of the calls which return dma_addr_t should be checked for error using dma_mapping_error(). But yes the change effect all lines in the paragraph due to line wrapping. Hum or maybe I'm misunderstanding your question. -- Regards, Niklas Söderlund _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
