[PATCH net-next] net: sfp: add error checking with sfp_irq_name

[Chris Healy]

Add error checking with sfp_irq_name before use.

Signed-off-by: Chris Healy <cphe...@gmail.com>
---
 drivers/net/phy/sfp.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 7bdfcde98266..eef458ab0e5b 100644
--- 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 |
-- 
2.21.3