Commits
Bjorn Helgaas committed d3694d4fa3f
PCI: Allow PCIe Capability link-related register access for switches Every PCIe device has a link, except Root Complex Integrated Endpoints and Root Complex Event Collectors. Previously we didn't give access to PCIe capability link-related registers for Upstream Ports, Downstream Ports, and Bridges, so attempts to read PCI_EXP_LNKCTL incorrectly returned zero. See PCIe spec r3.0, sec 7.8 and 1.3.2.3. Reference: http://lkml.kernel.org/r/979A8436335E3744ADCD3A9F2A2B68A52AD136BE@SJEXCHMB10.corp.ad.broadcom.com Reported-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-By: Jiang Liu <jiang.liu@huawei.com>