[Intel-gfx] [PATCH V3 09/29] drm/i915: deprecate pci_get_bus_and_slot()

Sinan Kaya okaya at codeaurora.org
Sun Dec 3 19:29:03 UTC 2017

On 11/28/2017 11:29 AM, Sinan Kaya wrote:
> On 11/28/2017 10:30 AM, Ville Syrjälä wrote:
>>> +	dev_priv->bridge_dev =
>>> +		pci_get_domain_bus_and_slot(domain, 0, PCI_DEVFN(0, 0));
>> Maybe just pci_get_slot(pdev->bus, PCI_DEVFN(0, 0)) ?
>> I guess if we want to be pedantic we could go for:
>> bus = pci_find_host_bridge(pdev->bus)->bus;
>> pci_get_slot(bus, PCI_DEVFN(0, 0))
>> but I think the GPU should always be on the root bus, so the simpler
>> form should be fine.
> All three of these should be correct. 
> I'll use pci_get_slot(pdev->bus, PCI_DEVFN(0, 0)) as you suggested.

Now that I think about this more, I think my version is a simpler change
and does not introduce "new features" by assuming GPU and host to be
on the same bus similar to the original code. 

Original code could have used pci_get_slot() too. Since all of them are
correct, mine is slightly more correct; I'd like to keep mine.

Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.

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