Re: [PATCH -next 1/2] i2c: designware: Switch from using MMIO access to SMN access

Jan Dąbroś
2023-01-16T10:19:18Z

Hi Borislav,

> Make init_amd_nbs() arch_initcall_sync() so that it executes after PCI init.

I described earlier in this thread why such option is not working -
let me quote myself:

It's not enough for running init_amd_nbs() to have only
pci_arch_init() done. We need the pci bus to be created and registered
with all devices found on the bus. We are traversing through them and
trying to find northbridge VID/DID. Due to the above, we need to run
init_amd_nbs() only after acpi_scan_init() that is invoked from
acpi_init() which is registered as subsys_initcall. That's why the
trick with switching init_amd_nbs() to arch_initcall_sync will not
work.

We have a kind of chicken-and-egg problem here. Or is there something I missed?

I wonder if there is upstreamable option to control order of the
drivers' init by forcing link order?

Best Regards,
Jan