Re: [RFC PATCH v2 07/11] dma-mapping: Add flags to dma_map_ops to indicate PCI P2PDMA support
From: Ira Weiny <hidden>
Date: 2021-03-13 02:38:02
Also in:
linux-iommu, linux-mm, linux-nvme, linux-pci, lkml
On Thu, Mar 11, 2021 at 04:31:37PM -0700, Logan Gunthorpe wrote:
+int dma_pci_p2pdma_supported(struct device *dev)
^^^ bool?
+{
+ const struct dma_map_ops *ops = get_dma_ops(dev);
+
+ return !ops || ops->flags & DMA_F_PCI_P2PDMA_SUPPORTED;Is this logic correct? I would have expected. return (ops && ops->flags & DMA_F_PCI_P2PDMA_SUPPORTED); Ira