diff options
| -rw-r--r-- | drivers/isdn/capi/capi.c | 30 |
1 files changed, 10 insertions, 20 deletions
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c index 0b264b4565c..867589a5916 100644 --- a/drivers/isdn/capi/capi.c +++ b/drivers/isdn/capi/capi.c @@ -45,7 +45,6 @@ MODULE_DESCRIPTION("CAPI4Linux: Userspace /dev/capi20 interface"); MODULE_AUTHOR("Carsten Paeth"); MODULE_LICENSE("GPL"); -#undef _DEBUG_REFCOUNT /* alloc/free and open/close debug */ #undef _DEBUG_TTYFUNCS /* call to tty_driver */ #undef _DEBUG_DATAFLOW /* data flow */ @@ -97,7 +96,6 @@ struct capiminor { int ttyinstop; int ttyoutstop; struct sk_buff *ttyskb; - atomic_t ttyopencount; struct sk_buff_head inqueue; int inbytes; @@ -230,7 +228,6 @@ static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci) mp->ap = ap; mp->ncci = ncci; mp->msgid = 0; - atomic_set(&mp->ttyopencount,0); INIT_LIST_HEAD(&mp->ackqueue); spin_lock_init(&mp->ackqlock); @@ -350,8 +347,17 @@ static void capincci_free_minor(struct capincci *np) static inline unsigned int capincci_minor_opencount(struct capincci *np) { struct capiminor *mp = np->minorp; + unsigned int count = 0; + struct tty_struct *tty; - return mp ? atomic_read(&mp->ttyopencount) : 0; + if (mp) { + tty = tty_port_tty_get(&mp->port); + if (tty) { + count = tty->count; + tty_kref_put(tty); + } + } + return count; } #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ @@ -1054,10 +1060,6 @@ static int capinc_tty_open(struct tty_struct *tty, struct file *filp) return err; spin_lock_irqsave(&workaround_lock, flags); - atomic_inc(&mp->ttyopencount); -#ifdef _DEBUG_REFCOUNT - printk(KERN_DEBUG "capinc_tty_open ocount=%d\n", atomic_read(&mp->ttyopencount)); -#endif handle_minor_recv(mp); spin_unlock_irqrestore(&workaround_lock, flags); return 0; @@ -1067,18 +1069,6 @@ static void capinc_tty_close(struct tty_struct *tty, struct file *filp) { struct capiminor *mp = tty->driver_data; - if (atomic_dec_and_test(&mp->ttyopencount)) { -#ifdef _DEBUG_REFCOUNT - printk(KERN_DEBUG "capinc_tty_close lastclose\n"); -#endif - } -#ifdef _DEBUG_REFCOUNT - printk(KERN_DEBUG "capinc_tty_close ocount=%d\n", atomic_read(&mp->ttyopencount)); -#endif - -#ifdef _DEBUG_REFCOUNT - printk(KERN_DEBUG "capinc_tty_close\n"); -#endif tty_port_close(&mp->port, tty, filp); } |