net: sfp: add error checking with sfp_irq_name

Add error checking with sfp_irq_name before use.

Signed-off-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 7bdfcde..eef458a 100644 (file)
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -2354,6 +2354,9 @@ static int sfp_probe(struct platform_device *pdev)
                                              "%s-%s", dev_name(sfp->dev),
                                              gpio_of_names[i]);
 
+               if (!sfp_irq_name)
+                       return -ENOMEM;
+
                err = devm_request_threaded_irq(sfp->dev, sfp->gpio_irq[i],
                                                NULL, sfp_irq,
                                                IRQF_ONESHOT |