[PATCHv2 2/4] PCI: dwc: Return directly when num-lanes is not found

[Z.q. Hou]

From: Hou Zhiqiang <Zhiqiang.Hou@xxxxxxx>

The num-lanes is optional, so probably it isn't added
on some platforms. The subsequent programming is base
on the num-lanes, hence return when it is not found.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@xxxxxxx>
Reviewed-by: Andrew Murray <andrew.murray@xxxxxxx>
---
V2:
 - No change.

 drivers/pci/controller/dwc/pcie-designware.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
index 7d25102c304c..0a89bfd1636e 100644
--- a/drivers/pci/controller/dwc/pcie-designware.c
+++ b/drivers/pci/controller/dwc/pcie-designware.c
@@ -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);
-- 
2.17.1