diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/altera_jtaguart.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/tty/serial/altera_jtaguart.c b/drivers/tty/serial/altera_jtaguart.c index ac8ce418de36..c2d154d78e54 100644 --- a/drivers/tty/serial/altera_jtaguart.c +++ b/drivers/tty/serial/altera_jtaguart.c @@ -310,11 +310,12 @@ static void altera_jtaguart_console_putc(struct uart_port *port, unsigned char c spin_lock_irqsave(&port->lock, flags); while (!altera_jtaguart_tx_space(port, &status)) { + spin_unlock_irqrestore(&port->lock, flags); + if ((status & ALTERA_JTAGUART_CONTROL_AC_MSK) == 0) { - spin_unlock_irqrestore(&port->lock, flags); return; /* no connection activity */ } - spin_unlock_irqrestore(&port->lock, flags); + cpu_relax(); spin_lock_irqsave(&port->lock, flags); } |