isdn/sc: irq handler clean

* pass card number to irq handler

* use card number in irq handler to avoid looping through each adapter

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 2 insertions, 15 deletions

diff --git a/drivers/isdn/sc/interrupt.c b/drivers/isdn/sc/interrupt.c
index bef7963cdd02..485be8b1e1b3 100644
--- a/drivers/isdn/sc/interrupt.c
+++ b/drivers/isdn/sc/interrupt.c
@@ -21,28 +21,15 @@
 #include "card.h"
 #include <linux/interrupt.h>
 
-static int get_card_from_irq(int irq)
-{
-        int i;
-
-        for(i = 0 ; i < cinst ; i++) {
-                if(sc_adapter[i]->interrupt == irq)
-                        return i;
-        }
-        return -1;
-}
-
 /*
  * 
  */
-irqreturn_t interrupt_handler(int interrupt, void *cardptr)
+irqreturn_t interrupt_handler(int dummy, void *card_inst)
 {
 
         RspMessage rcvmsg;
         int channel;
-        int card;
-
-        card = get_card_from_irq(interrupt);
+        int card = (int)(unsigned long) card_inst;
 
         if(!IS_VALID_CARD(card)) {
                 pr_debug("Invalid param: %d is not a valid card id\n", card);