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Subject: Re: [net-next] pci_regs.h: Add PCI bus link speed and width defines
From: David Miller <davem@davemloft.net>
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From: Bjorn Helgaas <bhelgaas@google.com>
Date: Fri, 3 Jan 2014 15:15:57 -0700

> However, I do raise my eyebrows a bit at drivers that poke around in
> the PCIe capability.  I would prefer to have PCI core interfaces that
> handle that instead.  But I haven't seen Jeff's changes yet.

The changes just read the link status to interpret the speed at which
the PCI-E link is running at.