[PATCH] irda: donauboe fixes, cleanups

- fix: toshoboe_invalid_dev() was recently removed, but not all callers
were updated, causing the obvious linker error. Remove caller,
because the check (like the one removed) isn't used.

- fix: propagate request_irq() return value

- cleanup: remove void* casts

- cleanup: remove impossible ASSERTs

Signed-off-by: Jeff Garzik <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/net/irda/donauboe.c

···
 static irqreturn_t
 toshoboe_interrupt (int irq, void *dev_id)
 {
-  struct toshoboe_cb *self = (struct toshoboe_cb *) dev_id;
+  struct toshoboe_cb *self = dev_id;
   __u8 irqstat;
   struct sk_buff *skb = NULL;
-
-  if (self == NULL && toshoboe_invalid_dev(irq))
-    return IRQ_NONE;
 
   irqstat = INB (OBOE_ISR);
 
···
 {
   struct toshoboe_cb *self;
   unsigned long flags;
+  int rc;
 
   IRDA_DEBUG (4, "%s()\n", __FUNCTION__);
 
-  IRDA_ASSERT (dev != NULL, return -1; );
-  self = (struct toshoboe_cb *) dev->priv;
-
-  IRDA_ASSERT (self != NULL, return 0; );
+  self = netdev_priv(dev);
 
   if (self->async)
     return -EBUSY;
···
   if (self->stopped)
     return 0;
 
-  if (request_irq (self->io.irq, toshoboe_interrupt,
-                   IRQF_SHARED | IRQF_DISABLED, dev->name, (void *) self))
-    {
-      return -EAGAIN;
-    }
+  rc = request_irq (self->io.irq, toshoboe_interrupt,
+                    IRQF_SHARED | IRQF_DISABLED, dev->name, self);
+  if (rc)
+  	return rc;
 
   spin_lock_irqsave(&self->spinlock, flags);
   toshoboe_startchip (self);