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395ee2a2a1
The initialisation of EEH mostly happens in a core_initcall_sync initcall, followed by registering a bus notifier later on in an arch_initcall. Anything involving initcall dependecies is mostly incomprehensible unless you've spent a while staring at code so here's the full sequence: ppc_md.setup_arch <-- pci_controllers are created here ...time passes... core_initcall <-- pci_dns are created from DT nodes core_initcall_sync <-- platforms call eeh_init() postcore_initcall <-- PCI bus type is registered postcore_initcall_sync arch_initcall <-- EEH pci_bus notifier registered subsys_initcall <-- PHBs are scanned here There's no real requirement to do the EEH setup at the core_initcall_sync level. It just needs to be done after pci_dn's are created and before we start scanning PHBs. Simplify the flow a bit by moving the platform EEH inititalisation to an arch_initcall so we can fold the bus notifier registration into eeh_init(). Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200918093050.37344-5-oohall@gmail.com |
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