Commit 66de33f0 authored Aug 20, 2019 by Hou Zhiqiang Committed by Lorenzo Pieralisi Aug 22, 2019

PCI: dwc: Return directly when num-lanes is not found



The num-lanes is optional since it is not needed on some platforms
that bring up the link in firmware.

The link programming is based on the num-lanes properties (which is
optional); if it is not present code must return instead of fiddling
with the lanes value to print an error message.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>

parent ee4ea764

drivers/pci/controller/dwc/pcie-designware.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -423,8 +423,10 @@ void dw_pcie_setup(struct dw_pcie *pci)


		ret = of_property_read_u32(np, "num-lanes", &lanes);
		if (ret)
		lanes = 0;
		if (ret) {
		dev_dbg(pci->dev, "property num-lanes isn't found\n");
		return;
		}

		/* Set the number of lanes */
		val = dw_pcie_readl_dbi(pci, PCIE_PORT_LINK_CONTROL);