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>
diff --git a/drivers/isdn/sc/interrupt.c b/drivers/isdn/sc/interrupt.c
index bef7963..485be8b 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);