diff options
Diffstat (limited to 'drivers/tty/serial/lantiq.c')
| -rw-r--r-- | drivers/tty/serial/lantiq.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c index 1933fe3c98dd..15733da757c6 100644 --- a/drivers/tty/serial/lantiq.c +++ b/drivers/tty/serial/lantiq.c @@ -163,21 +163,15 @@ static int lqasc_rx_chars(struct uart_port *port) { struct tty_port *tport = &port->state->port; - struct tty_struct *tty = tty_port_tty_get(tport); unsigned int ch = 0, rsr = 0, fifocnt; - if (!tty) { - dev_dbg(port->dev, "%s:tty is busy now", __func__); - return -EBUSY; - } - fifocnt = - ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_RXFFLMASK; + fifocnt = ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_RXFFLMASK; while (fifocnt--) { u8 flag = TTY_NORMAL; ch = ltq_r8(port->membase + LTQ_ASC_RBUF); rsr = (ltq_r32(port->membase + LTQ_ASC_STATE) & ASCSTATE_ANY) | UART_DUMMY_UER_RX; - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tport); port->icount.rx++; /* @@ -219,9 +213,10 @@ lqasc_rx_chars(struct uart_port *port) */ tty_insert_flip_char(tport, 0, TTY_OVERRUN); } + if (ch != 0) - tty_flip_buffer_push(tty); - tty_kref_put(tty); + tty_flip_buffer_push(tport); + return 0; } |