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path: root/drivers/isdn/capi/capi.c
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Diffstat (limited to 'drivers/isdn/capi/capi.c')
-rw-r--r--drivers/isdn/capi/capi.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index 24c6b7ca62be..6ca0bb949ad3 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -1111,11 +1111,12 @@ static int capinc_tty_write(struct tty_struct * tty,
return count;
}
-static void capinc_tty_put_char(struct tty_struct *tty, unsigned char ch)
+static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch)
{
struct capiminor *mp = (struct capiminor *)tty->driver_data;
struct sk_buff *skb;
unsigned long flags;
+ int ret = 1;
#ifdef _DEBUG_TTYFUNCS
printk(KERN_DEBUG "capinc_put_char(%u)\n", ch);
@@ -1125,7 +1126,7 @@ static void capinc_tty_put_char(struct tty_struct *tty, unsigned char ch)
#ifdef _DEBUG_TTYFUNCS
printk(KERN_DEBUG "capinc_tty_put_char: mp or mp->ncci NULL\n");
#endif
- return;
+ return 0;
}
spin_lock_irqsave(&workaround_lock, flags);
@@ -1134,7 +1135,7 @@ static void capinc_tty_put_char(struct tty_struct *tty, unsigned char ch)
if (skb_tailroom(skb) > 0) {
*(skb_put(skb, 1)) = ch;
spin_unlock_irqrestore(&workaround_lock, flags);
- return;
+ return 1;
}
mp->ttyskb = NULL;
skb_queue_tail(&mp->outqueue, skb);
@@ -1148,8 +1149,10 @@ static void capinc_tty_put_char(struct tty_struct *tty, unsigned char ch)
mp->ttyskb = skb;
} else {
printk(KERN_ERR "capinc_put_char: char %u lost\n", ch);
+ ret = 0;
}
spin_unlock_irqrestore(&workaround_lock, flags);
+ return ret;
}
static void capinc_tty_flush_chars(struct tty_struct *tty)