diff options
Diffstat (limited to 'drivers/tty/serial/imx.c')
| -rw-r--r-- | drivers/tty/serial/imx.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index cddf902..0628fc4 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -700,7 +700,8 @@ static irqreturn_t imx_rxint(int irq, void *dev_id) if (sport->port.ignore_status_mask & URXD_DUMMY_READ) goto out; - tty_insert_flip_char(port, rx, flg); + if (tty_insert_flip_char(port, rx, flg) == 0) + sport->port.icount.buf_overrun++; } out: @@ -921,8 +922,13 @@ static void dma_rx_callback(void *data) dev_dbg(sport->port.dev, "We get %d bytes.\n", count); if (count) { - if (!(sport->port.ignore_status_mask & URXD_DUMMY_READ)) - tty_insert_flip_string(port, sport->rx_buf, count); + if (!(sport->port.ignore_status_mask & URXD_DUMMY_READ)) { + int bytes = tty_insert_flip_string(port, sport->rx_buf, + count); + + if (bytes != count) + sport->port.icount.buf_overrun++; + } tty_flip_buffer_push(port); start_rx_dma(sport); |