diff options
| author | Jiada Wang <jiada_wang@mentor.com> | 2014-12-09 18:11:35 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-09 14:23:59 -0800 |
| commit | 7e2fb5aa8d819e8cc0b6815ad627b7e911fabfd9 (patch) | |
| tree | 6e12de6e01b2dfa754835766cbbb1a1d2b983302 /drivers/tty/serial/imx.c | |
| parent | 6f026d6b7cb6e019b6352ed7fb71497c787fd6d7 (diff) | |
serial: imx: Fix issue in software flow control
After send out x_char in UART driver, x_char needs to be cleared
by UART driver itself, otherwise data in TXFIFO can no longer be
sent out.
Also tx counter needs to be increased to keep track of correct
number of transmitted data.
Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/imx.c')
| -rw-r--r-- | drivers/tty/serial/imx.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 79f485b99c3f..5a7da019f01a 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -471,6 +471,8 @@ static inline void imx_transmit_buffer(struct imx_port *sport) if (sport->port.x_char) { /* Send next char */ writel(sport->port.x_char, sport->port.membase + URTX0); + sport->port.icount.tx++; + sport->port.x_char = 0; return; } |