PCI: rcar: Check platform_get_irq() return code

The current code does not check the return from platform_get_irq() so add
an error check and return if this call does fail.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/host/pci-rcar-gen2.c
index ceec147baec3..201e4a450340 100644
--- a/drivers/pci/host/pci-rcar-gen2.c
+++ b/drivers/pci/host/pci-rcar-gen2.c
@@ -308,6 +308,11 @@ static int __init rcar_pci_probe(struct platform_device *pdev)
         priv->reg = reg;
         priv->dev = &pdev->dev;
 
+        if (priv->irq < 0) {
+                dev_err(&pdev->dev, "no valid irq found\n");
+                return priv->irq;
+        }
+
         return rcar_pci_add_controller(priv);
 }