From: David Engraf <david.engraf@xxxxxxxxx>
commit 885199148442f56b880995d703d2ed03b6481a3c upstream.
pm_runtime_get_sync() returns the device's usage counter. This might
be >0 if the device is already powered up or CONFIG_PM is disabled.
Abort probe function on real error only.
Fixes: da76ba50963b ("PCI: tegra: Add power management support")
Link: https://lore.kernel.org/r/20191216111825.28136-1-david.engraf@xxxxxxxxx
Signed-off-by: David Engraf <david.engraf@xxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Acked-by: Andrew Murray <andrew.murray@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # v4.17+
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pci/controller/pci-tegra.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pci/controller/pci-tegra.c
+++ b/drivers/pci/controller/pci-tegra.c
@@ -2398,7 +2398,7 @@ static int tegra_pcie_probe(struct platf
pm_runtime_enable(pcie->dev);
err = pm_runtime_get_sync(pcie->dev);
- if (err) {
+ if (err < 0) {
dev_err(dev, "fail to enable pcie controller: %d\n", err);
goto teardown_msi;
}
