PCI: designware: Make "num-lanes" an optional DT property

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Currently "num-lanes" is read in dw_pcie_host_init(), but it is only used
if we call dw_pcie_setup_rc() while bringing up the link.  If the link has
already been brought up by firmware, we need not call dw_pcie_setup_rc(),
and "num-lanes" is unnecessary.

Only complain about "num-lanes" if we actually need it and we didn't find a
valid value.

[bhelgaas: changelog]
Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

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Gabriele Paoloni 2015-09-29 00:03:10 +08:00 • committed by Bjorn Helgaas

parent b6b18f589e

commit 907fce0902

2 changed files with 8 additions and 5 deletions

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3

Documentation/devicetree/bindings/pci/designware-pcie.txt

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10

drivers/pci/host/pcie-designware.c

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