add return value check of request_irq()

This patch has added return value check of request_irq() to pcmcia net drivers.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/net/pcmcia/pcnet_cs.c b/drivers/net/pcmcia/pcnet_cs.c
index 61f7a4f3ee65..f2613c29b008 100644
--- a/drivers/net/pcmcia/pcnet_cs.c
+++ b/drivers/net/pcmcia/pcnet_cs.c
@@ -960,6 +960,7 @@ static void mii_phy_probe(struct net_device *dev)
 
 static int pcnet_open(struct net_device *dev)
 {
+    int ret;
     pcnet_dev_t *info = PRIV(dev);
     struct pcmcia_device *link = info->p_dev;
 
@@ -968,10 +969,12 @@ static int pcnet_open(struct net_device *dev)
     if (!pcmcia_dev_present(link))
         return -ENODEV;
 
-    link->open++;
-
     set_misc_reg(dev);
-    request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, dev_info, dev);
+    ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, dev_info, dev);
+    if (ret)
+            return ret;
+
+    link->open++;
 
     info->phy_id = info->eth_phy;
     info->link_status = 0x00;