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authorJeff Garzik <jeff@garzik.org>2007-10-19 19:31:27 -0400
committerJeff Garzik <jeff@garzik.org>2007-10-23 19:53:16 -0400
commit080eb42f31a8a6dde1568f906692d9914cdfbfe8 (patch)
treebddb8ebfac4dc381989a8c8695a8578b5a83021c
parent246f93f5cc0d4116cadf33ad1c8ae7ac08e9b1c7 (diff)
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>
-rw-r--r--drivers/isdn/sc/init.c3
-rw-r--r--drivers/isdn/sc/interrupt.c17
2 files changed, 4 insertions, 16 deletions
diff --git a/drivers/isdn/sc/init.c b/drivers/isdn/sc/init.c
index d09c854cfac..dd0acd06750 100644
--- a/drivers/isdn/sc/init.c
+++ b/drivers/isdn/sc/init.c
@@ -334,7 +334,8 @@ static int __init sc_init(void)
*/
sc_adapter[cinst]->interrupt = irq[b];
if (request_irq(sc_adapter[cinst]->interrupt, interrupt_handler,
- IRQF_DISABLED, interface->id, NULL))
+ IRQF_DISABLED, interface->id,
+ (void *)(unsigned long) cinst))
{
kfree(sc_adapter[cinst]->channel);
indicate_status(cinst, ISDN_STAT_UNLOAD, 0, NULL); /* Fix me */
diff --git a/drivers/isdn/sc/interrupt.c b/drivers/isdn/sc/interrupt.c
index bef7963cdd0..485be8b1e1b 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);