On Thu, 17 Jul 2014 05:58:03 +0800, Amerei Acuna said: > I'm writing a custom PCI driver for a hobby endpoint. Due to some > "special", possibly unique, circumstance, I need to determine if two > devices form a pair. As I'm using a PCI switch to connect these two > devices, I'm thinking on the possibility of checking if the two devices > share a common pci-pci bridge (or finding the least common ancestor in a > directed graph). What happens if your two devices and a totally unrelated PCI device are all three downstream of the same PCI bridge?
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