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Use mutex instead of semaphore in CAPI 2.0 driver

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The CAPI 2.0 driver uses a semaphore as mutex.  Use the mutex API instead of
the (binary) semaphore.

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Matthias Kaehlcke 2007-07-17 04:04:16 -07:00 committed by Linus Torvalds
parent 9404082898
commit 67837f232d
2 changed files with 4 additions and 4 deletions
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6
drivers/isdn/capi/kcapi.c
View file

@ -258,7 +258,7 @@ static void recv_handler(struct work_struct *work)
if ((!ap) || (ap->release_in_progress))
return;
down(&ap->recv_sem);
mutex_lock(&ap->recv_mtx);
while ((skb = skb_dequeue(&ap->recv_queue))) {
if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_IND)
ap->nrecvdatapkt++;
@ -267,7 +267,7 @@ static void recv_handler(struct work_struct *work)
ap->recv_message(ap, skb);
}
up(&ap->recv_sem);
mutex_unlock(&ap->recv_mtx);
}
void capi_ctr_handle_message(struct capi_ctr * card, u16 appl, struct sk_buff *skb)
@ -547,7 +547,7 @@ u16 capi20_register(struct capi20_appl *ap)
ap->nsentctlpkt = 0;
ap->nsentdatapkt = 0;
ap->callback = NULL;
init_MUTEX(&ap->recv_sem);
mutex_init(&ap->recv_mtx);
skb_queue_head_init(&ap->recv_queue);
INIT_WORK(&ap->recv_work, recv_handler);
ap->release_in_progress = 0;

2
include/linux/kernelcapi.h
View file

@ -64,7 +64,7 @@ struct capi20_appl {
unsigned long nrecvdatapkt;
unsigned long nsentctlpkt;
unsigned long nsentdatapkt;
struct semaphore recv_sem;
struct mutex recv_mtx;
struct sk_buff_head recv_queue;
struct work_struct recv_work;
int release_in_progress;