isdn: switch to int put_char method
Alan Cox [Wed, 30 Apr 2008 07:54:09 +0000 (00:54 -0700)]
Signed-off-by: Alan Cox <alan@redhat.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>

drivers/isdn/capi/capi.c

index 24c6b7c..6ca0bb9 100644 (file)
@@ -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)