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| author |   Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2016-03-24 14:24:23 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-30 09:26:55 -0700 |
| commit | 9ec8efe94b5c6a797aa5bceca337373d310f9c2c (patch) | |
| tree | e16cc1c80d81d83cfa4005a6415737e283f1d309 /drivers/tty/serial/imx.c | |
| parent | serial: imx: make sure unhandled irqs are disabled (diff) | |
| download | linux-dev-9ec8efe94b5c6a797aa5bceca337373d310f9c2c.tar.xz linux-dev-9ec8efe94b5c6a797aa5bceca337373d310f9c2c.zip | |
serial: imx: only count 0->1 transitions for RNG
According to tty_ioctl(4) (from man-pages 4.04) the rng member only
counts 0->1 transitions. For the other signals (DSR, CD, CTS) both edges
are supposed to be counted.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index aa07301df262..8ec8127bc3dc 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -887,7 +887,7 @@ static void imx_mctrl_check(struct imx_port *sport) sport->old_status = status; - if (changed & TIOCM_RI) + if (changed & TIOCM_RI && status & TIOCM_RI) sport->port.icount.rng++; if (changed & TIOCM_DSR) sport->port.icount.dsr++; |