Re: [PATCH v5 5/7] PCI: Add support for a function level reset based on _RST method

[Shanker R Donthineni]

Hi Bjorn,

On 6/5/21 3:53 PM, Bjorn Helgaas wrote:
> This is a little sketchy.  We shouldn't be doing device config stuff
> after device_add() because that's when it becomes available for
> drivers to bind to the device.  If we do anything with the device
> after that point, we may interfere with a driver.
>
> I think the problem is that we don't call acpi_bind_one() until
> device_add().  There's some hackery in pci-acpi.c to deal with a
> similar problem for something else -- see acpi_pci_bridge_d3().

Thanks for pointing to reference code. I've added a new patch for setting
ACPI_COMPANION before device_add(). Please review the updated patch
series v7 'Expose and manage PCI device reset' and provide feedback.

-Shanker