diff options
Diffstat (limited to 'drivers/char/synclink.c')
| -rw-r--r-- | drivers/char/synclink.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c index dbbd998ae103..4fbfff7a442e 100644 --- a/drivers/char/synclink.c +++ b/drivers/char/synclink.c @@ -2026,10 +2026,11 @@ static void mgsl_change_params(struct mgsl_struct *info) * * 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 @@ static void mgsl_put_char(struct tty_struct *tty, unsigned char ch) } 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() */ |