synclink series: switch to int put_char method
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Paul Fulghum <paulkf@microgate.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index dbbd998..4fbfff7a 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -2026,10 +2026,11 @@
*
* Return Value: None
*/
-static void mgsl_put_char(struct tty_struct *tty, unsigned char ch)
+static int mgsl_put_char(struct tty_struct *tty, unsigned char ch)
{
struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
unsigned long flags;
+ int ret;
if ( debug_level >= DEBUG_LEVEL_INFO ) {
printk( "%s(%d):mgsl_put_char(%d) on %s\n",
@@ -2037,23 +2038,23 @@
}
if (mgsl_paranoia_check(info, tty->name, "mgsl_put_char"))
- return;
+ return 0;
if (!tty || !info->xmit_buf)
- return;
+ return 0;
spin_lock_irqsave(&info->irq_spinlock,flags);
if ( (info->params.mode == MGSL_MODE_ASYNC ) || !info->tx_active ) {
-
if (info->xmit_cnt < SERIAL_XMIT_SIZE - 1) {
info->xmit_buf[info->xmit_head++] = ch;
info->xmit_head &= SERIAL_XMIT_SIZE-1;
info->xmit_cnt++;
+ ret = 1;
}
}
-
spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ return ret;
} /* end of mgsl_put_char() */