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PCI: Use cached Device Capabilities Register
It will make sense to store the pcie_devcap value in the pci_dev structure instead of reading Device Capabilities Register multiple times. The fisrt place to use pcie_devcap is in set_pcie_port_type(), get the pcie_devcap value here, then use cached pcie_devcap in the needed place. Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
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