Added dev_warn messages to alert of devicetree misconfigurations
for incorrect num-lanes setting, or the lack of one being defined.
Signed-off-by: Matt Ranostay <mranostay@xxxxxx>
---
drivers/pci/controller/cadence/pci-j721e.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/controller/cadence/pci-j721e.c b/drivers/pci/controller/cadence/pci-j721e.c
index 397e456af439..5a3e257055e4 100644
--- a/drivers/pci/controller/cadence/pci-j721e.c
+++ b/drivers/pci/controller/cadence/pci-j721e.c
@@ -442,9 +442,16 @@ static int j721e_pcie_probe(struct platform_device *pdev)
pcie->user_cfg_base = base;
ret = of_property_read_u32(node, "num-lanes", &num_lanes);
- if (ret || num_lanes > data->max_lanes)
+ if (ret) {
+ dev_warn(dev, "no num-lanes defined, defaulting to 1\n");
num_lanes = 1;
+ }
+ if (num_lanes > data->max_lanes) {
+ dev_warn(dev, "defined num-lanes %u is greater than the allowed maximum of %u, defaulting to 1\n",
+ num_lanes, data->max_lanes);
+ num_lanes = 1;
+ }
pcie->max_lanes = data->max_lanes;
pcie->num_lanes = num_lanes;
--
2.38.GIT
