[PATCH] PCI/pwrctrl: Create device link only if both platform device and supplies are present

[Manivannan Sadhasivam]

Checking only for platform device for the PCI devices and creating the
devlink causes regression on SPARCv9 systems as they seem to have platform
device populated elsewhere.

So add a check for supplies in DT to make sure that the devlink is only
created for devices that require pwrctrl support.

Reported-by: Jonathan Currier <dullfire@xxxxxxxxx>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219513
Fixes: 03cfe0e05650 ("PCI/pwrctl: Ensure that the pwrctl drivers are probed before the PCI client drivers")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
---
 drivers/pci/bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 7a061cc860d5..e70f4c089cd4 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -394,7 +394,7 @@ void pci_bus_add_device(struct pci_dev *dev)
 	 * PCI client drivers.
 	 */
 	pdev = of_find_device_by_node(dn);
-	if (pdev) {
+	if (pdev && of_pci_is_supply_present(dn)) {
 		if (!device_link_add(&dev->dev, &pdev->dev,
 				     DL_FLAG_AUTOREMOVE_CONSUMER))
 			pci_err(dev, "failed to add device link between %s and %s\n",
-- 
2.25.1