Re: [PATCH v3 3/8] of/address: Introduce of_dma_get_max_cpu_address()
From: Christoph Hellwig <hch@lst.de>
Date: 2020-10-15 05:42:50
Also in:
linux-devicetree, linux-iommu, lkml
+phys_addr_t __init of_dma_get_max_cpu_address(struct device_node *np)
+{
+ phys_addr_t max_cpu_addr = PHYS_ADDR_MAX;
+ struct of_range_parser parser;
+ phys_addr_t subtree_max_addr;
+ struct device_node *child;
+ phys_addr_t cpu_end = 0;
+ struct of_range range;
+ const __be32 *ranges;
+ int len;
+
+ if (!np)
+ np = of_root;Requiring of_root to be passed explicitly would seem more natural to me than the magic NULL argument. There doesn't seem to be any precedent for that kind of calling convention either. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel