Re: [PATCH update] PCI / ACPI: PCI delay optimization from ACPI

[Aaron Lu <aaron.lu@intel.com>]

On 03/23/2015 01:35 PM, Aaron Lu wrote:
> On 03/21/2015 05:03 AM, Bjorn Helgaas wrote:
>> I think you need something in pci_root.c that evaluates _DSM function 8 for
>> the host bridge, and then some mechanism for all the devices under that
>> bridge to inherit the result.
> 
> Thanks for the suggestion, will try to do this in the next revision.

Turned out I can decide if a PCI bridge is the host bridge or not by
checking: pdev->bus->bridge->parent pointer, so I did something like
this instead:

+       /* Function 8 is only applicable to host bridge */
+       if (pdev->bus->bridge->parent)
+               return;

Looks good?

And I also renamed the UUID and moved the common definitions to pci.h,
so the following two patches do these things:
patch 1: rename the PCI UUID and move the definitions to pci.h;
patch 2: add check for host bridge in pci_acpi_delay_optimize, re-order
         elements[0] and elements[3] check and use macros for _DSM
	 function 8 and 9.

Thanks,
Aaron