[ISDN] minor irq handler cleanups

- reference irq number in CardState structure

- remove now-unused 'intno' argument from rs_interrupt_elsa()

- cs->irq_func() should be defined using standard irq_handler_t

- add KERN_DEBUG to printk() where appropriate

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/isdn/hisax/elsa_ser.c b/drivers/isdn/hisax/elsa_ser.c
index 1642dca..f181db4 100644
--- a/drivers/isdn/hisax/elsa_ser.c
+++ b/drivers/isdn/hisax/elsa_ser.c
@@ -384,13 +384,13 @@
 }
 
 
-static void rs_interrupt_elsa(int irq, struct IsdnCardState *cs)
+static void rs_interrupt_elsa(struct IsdnCardState *cs)
 {
 	int status, iir, msr;
 	int pass_counter = 0;
 	
 #ifdef SERIAL_DEBUG_INTR
-	printk("rs_interrupt_single(%d)...", irq);
+	printk(KERN_DEBUG "rs_interrupt_single(%d)...", cs->irq);
 #endif
 
 	do {