cassini: init before use in cas_interruptN.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Spotted-by: Thomas Jarosch <thomas.jarosch@intra2net.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/cassini.c b/drivers/net/cassini.c
index 646c86bcc545e08835cc07b07ca913b1ba64dbcc..fdb7a175640981186b5e891dc7f7d34fedddb223 100644 (file)
--- a/drivers/net/cassini.c
+++ b/drivers/net/cassini.c
@@ -2452,14 +2452,13 @@ static irqreturn_t cas_interruptN(int irq, void *dev_id)
        struct net_device *dev = dev_id;
        struct cas *cp = netdev_priv(dev);
        unsigned long flags;
-       int ring;
+       int ring = (irq == cp->pci_irq_INTC) ? 2 : 3;
        u32 status = readl(cp->regs + REG_PLUS_INTRN_STATUS(ring));
 
        /* check for shared irq */
        if (status == 0)
                return IRQ_NONE;
 
-       ring = (irq == cp->pci_irq_INTC) ? 2 : 3;
        spin_lock_irqsave(&cp->lock, flags);
        if (status & INTR_RX_DONE_ALT) { /* handle rx separately */
 #ifdef USE_NAPI