On chips without a separate power domain for PCI (such as 6q/6qp) the
imx6_pcie_attach_pd function incorrectly returns an error.
Fix by returning 0 if dev_pm_domain_attach_by_name doesn't find
anything.
Fixes: 3f7cceeab895 ("PCI: imx: Add multi-pd support")
Reported-by: Lukas F.Hartmann <lukas@xxxxxxxxx>
Signed-off-by: Leonard Crestez <leonard.crestez@xxxxxxx>
---
drivers/pci/controller/dwc/pci-imx6.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 52e47dac028f..ac5f6ae0b254 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -308,10 +308,13 @@ static int imx6_pcie_attach_pd(struct device *dev)
return 0;
imx6_pcie->pd_pcie = dev_pm_domain_attach_by_name(dev, "pcie");
if (IS_ERR(imx6_pcie->pd_pcie))
return PTR_ERR(imx6_pcie->pd_pcie);
+ /* Do nothing when power domain missing */
+ if (!imx6_pcie->pd_pcie)
+ return 0;
link = device_link_add(dev, imx6_pcie->pd_pcie,
DL_FLAG_STATELESS |
DL_FLAG_PM_RUNTIME |
DL_FLAG_RPM_ACTIVE);
if (!link) {
--
2.17.1
