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-rw-r--r--drivers/serial/serial_cs.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c
index 0ee7239c5d6..df854401af2 100644
--- a/drivers/serial/serial_cs.c
+++ b/drivers/serial/serial_cs.c
@@ -146,7 +146,8 @@ static void quirk_wakeup_oxsemi(struct pcmcia_device *link)
{
struct serial_info *info = link->priv;
- outb(12, info->c950ctrl + 1);
+ if (info->c950ctrl)
+ outb(12, info->c950ctrl + 1);
}
/* request_region? oxsemi branch does no request_region too... */