[PATCH 1/3] PCI: rcar: check platform_get_irq() return code

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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@xxxxxxxxxxxxxxx>
---
Cc: Valentine Barshak <valentine.barshak@xxxxxxxxxxxxxxxxxx>
Cc: Simon Horman <horms@xxxxxxxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: linux-pci@xxxxxxxxxxxxxxx
Cc: linux-sh@xxxxxxxxxxxxxxx
---
 drivers/pci/host/pci-rcar-gen2.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/host/pci-rcar-gen2.c
index ea65bac..674f7fe 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);
 }
 
-- 
1.8.5.2

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