netdev - [PATCH 07/12] isdn: hisax: Handle return value of pnp_irq and pnp_port

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Message-Id: <c9a84794d2adfd3c6ec25bd60f18b4911da0177c.1510805781.git.arvind.yadav.cs@gmail.com>
Date:   Thu, 16 Nov 2017 09:57:24 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     isdn@...ux-pingi.de, davem@...emloft.net,
        stephen@...workplumber.org, johannes.berg@...el.com
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH 07/12] isdn: hisax: Handle return value of pnp_irq and pnp_port_start

pnp_irq() and pnp_port_start() can fail here and we must check
its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/isdn/hisax/hisax_fcpcipnp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/isdn/hisax/hisax_fcpcipnp.c b/drivers/isdn/hisax/hisax_fcpcipnp.c
index e4f7573..7a7137d 100644
--- a/drivers/isdn/hisax/hisax_fcpcipnp.c
+++ b/drivers/isdn/hisax/hisax_fcpcipnp.c
@@ -940,6 +940,8 @@ static int fcpnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id)
 	}
 	adapter->io = pnp_port_start(pdev, 0);
 	adapter->irq = pnp_irq(pdev, 0);
+	if (!adapter->io || adapter->irq == -1)
+		goto err_free;
 
 	printk(KERN_INFO "hisax_fcpcipnp: found adapter %s at IO %#x irq %d\n",
 	       (char *) dev_id->driver_data, adapter->io, adapter->irq);
-- 
1.9.1