diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2011-11-22 14:22:56 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-11-27 05:10:13 +0100 |
| commit | d0758a285caaf86192cdb22136a5eb84ed72f276 (patch) | |
| tree | dbfa5c77c7a15711484302566dcd2794e6733fb1 /drivers/tty/serial/mxs-auart.c | |
| parent | serial/imx: propagate error of platform_driver_register in init routine (diff) | |
| download | linux-d0758a285caaf86192cdb22136a5eb84ed72f276.tar.xz linux-d0758a285caaf86192cdb22136a5eb84ed72f276.zip | |
serial/mxs-auart: only wake up tty layer once
There is no need to call uart_write_wakeup after each character send.
Once at the end of the write sequence is enough.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/tty/serial/mxs-auart.c')
| -rw-r--r-- | drivers/tty/serial/mxs-auart.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c index 7e02c9c344fe..076169f50b01 100644 --- a/drivers/tty/serial/mxs-auart.c +++ b/drivers/tty/serial/mxs-auart.c @@ -145,11 +145,12 @@ static inline void mxs_auart_tx_chars(struct mxs_auart_port *s) writel(xmit->buf[xmit->tail], s->port.membase + AUART_DATA); xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); - if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) - uart_write_wakeup(&s->port); } else break; } + if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) + uart_write_wakeup(&s->port); + if (uart_circ_empty(&(s->port.state->xmit))) writel(AUART_INTR_TXIEN, s->port.membase + AUART_INTR_CLR); |