1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/wan/n2.c b/drivers/net/wan/n2.c
index cd32751b64eb..b7d88db89a5c 100644
--- a/drivers/net/wan/n2.c
+++ b/drivers/net/wan/n2.c
@@ -387,6 +387,11 @@ static int __init n2_run(unsigned long io, unsigned long irq,
         }
         card->phy_winbase = winbase;
         card->winbase = ioremap(winbase, USE_WINDOWSIZE);
+        if (!card->winbase) {
+                printk(KERN_ERR "n2: ioremap() failed\n");
+                n2_destroy_card(card);
+                return -EFAULT;
+        }
 
         outb(0, io + N2_PCR);
         outb(winbase >> 12, io + N2_BAR);