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path: root/drivers/net/wan/n2.c
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Diffstat (limited to 'drivers/net/wan/n2.c')
-rw-r--r--drivers/net/wan/n2.c5
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);