From: Ben Dooks <ben.dooks@codethink.co.uk>
Date: Tue, 18 Feb 2014 02:10:51 +0000 (+0900)
Subject: PCI: rcar: Check platform_get_irq() return code
X-Git-Tag: firefly_0821_release~176^2~4197^2~2^4~5
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ed65b78881c713b41051310780f94bde3c010db9;p=firefly-linux-kernel-4.4.55.git

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>
---

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);
 }