This reverts commit 
15920d8afc87861672e16fa95ae2764b065d6dd3.
This patch was discovered to cause some hostap devices to fail to
initialized.
https://bugzilla.kernel.org/show_bug.cgi?id=16111
Signed-off-by: John W. Linville <linville@tuxdriver.com>
        int events = 0;
        u16 ev;
 
-       /* Detect early interrupt before driver is fully configued */
-       if (!dev->base_addr) {
-               if (net_ratelimit()) {
-                       printk(KERN_DEBUG "%s: Interrupt, but dev not configured\n",
-                              dev->name);
-               }
-               return IRQ_HANDLED;
-       }
-
        iface = netdev_priv(dev);
        local = iface->local;