Re: [PATCH v4 2/3] PCI: Add soft reset method as last resort

[Jose Ignacio Tornos Martinez <jtornosm@redhat.com>]

Hello Alex,

Thank you for the guidance.

OK, using pci_dev_reset_methods[] makes sense.
I'll implement device_specific reset entries for the Qualcomm devices using
pci_set_power_state(dev, D3cold), which automatically falls back to D3hot
when the platform doesn't support D3cold. This handles both scenarios
(platforms with and without _PR3).

I'll keep the general d3cold reset method (patch 1/3) as well, since it
provides value for other devices that need strict _PR3-based power cycling
without D3hot fallback. The device_specific entries are the Qualcomm-specific
workaround, while d3cold remains general infrastructure.

I'll also keep quirk_no_bus_reset as a safety net to prevent the known-broken
bus reset from being attempted. This ensures that if users override reset
methods via sysfs, they can still use d3cold (when _PR3 is available) without
accidentally falling back to the broken bus reset.

Thanks

Best regards
José Ignacio