pci: mvebu: fix return value check in mvebu_pcie_probe()

In case of error, function of_clk_get_by_name() returns
ERR_PTR() never returns NULL. The NULL test in the return
value check should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c
index ad1c46b..9236ac0 100644 (file)
--- a/drivers/pci/host/pci-mvebu.c
+++ b/drivers/pci/host/pci-mvebu.c
@@ -828,7 +828,7 @@ static int __init mvebu_pcie_probe(struct platform_device *pdev)
                }
 
                port->clk = of_clk_get_by_name(child, NULL);
-               if (!port->clk) {
+               if (IS_ERR(port->clk)) {
                        dev_err(&pdev->dev, "PCIe%d.%d: cannot get clock\n",
                               port->port, port->lane);
                        iounmap(port->base);