[PATCH] PCI: j721e: In j721e_pcie_suspend_noirq() check reset_gpio before to use it

[Thomas Richard]

The reset_gpio is optional, so in j721e_pcie_suspend_noirq() check if it is
not NULL before to use it.

Fixes: c538d40f365b ("PCI: j721e: Add suspend and resume support")
Signed-off-by: Thomas Richard <thomas.richard at bootlin.com>
---
 drivers/pci/controller/cadence/pci-j721e.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/cadence/pci-j721e.c b/drivers/pci/controller/cadence/pci-j721e.c
index 0341d51d6aed..5bc14dd70811 100644
--- a/drivers/pci/controller/cadence/pci-j721e.c
+++ b/drivers/pci/controller/cadence/pci-j721e.c
@@ -644,7 +644,9 @@ static int j721e_pcie_suspend_noirq(struct device *dev)
 	struct j721e_pcie *pcie = dev_get_drvdata(dev);
 
 	if (pcie->mode == PCI_MODE_RC) {
-		gpiod_set_value_cansleep(pcie->reset_gpio, 0);
+		if (pcie->reset_gpio)
+			gpiod_set_value_cansleep(pcie->reset_gpio, 0);
+
 		clk_disable_unprepare(pcie->refclk);
 	}
 
-- 
2.39.5