Re: [PATCH V2 1/5] PCI: Use cached Device Capabilities 2 Register

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On Tue, May 11, 2021 at 11:09:00PM +0800, Dongdong Liu wrote:
> It will make sense to store the devcap2 value in the pci_dev structure
> instead of reading Device Capabilities 2 Register multiple times.
> So we add pci_init_devcap2() to get the value of devcap2, then use
> cached devcap2 in the needed place.

This looks sensible.  Should the devcap field maybe grow a pcie_
prefix?  What about caching PCI_EXP_DEVCAP as well while you're at it?



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