diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-07 16:10:08 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-07 16:10:08 -0800 |
| commit | 5f5357335e2816ec3f9fe62337bc8dc1725992e8 (patch) | |
| tree | ed320bb25f13b3a088440d8d8bcfae9050c60c37 /drivers/tty/serial/sc16is7xx.c | |
| parent | a3f0b77f36ca5c5871fb8daf7e66fa409abe1ed5 (diff) | |
Revert "sc16is7xx: implemented get_mctrl"
This reverts commit a3f0b77f36ca5c5871fb8daf7e66fa409abe1ed5.
Maarten writes:
It appears to be wrong and I don't have a good idea how to fix
it yet.
Cc: Maarten Brock <m.brock@vanmierlo.com>
Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
Diffstat (limited to 'drivers/tty/serial/sc16is7xx.c')
| -rw-r--r-- | drivers/tty/serial/sc16is7xx.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c index e78fa99475c0..025a4264430e 100644 --- a/drivers/tty/serial/sc16is7xx.c +++ b/drivers/tty/serial/sc16is7xx.c @@ -822,16 +822,10 @@ static unsigned int sc16is7xx_tx_empty(struct uart_port *port) static unsigned int sc16is7xx_get_mctrl(struct uart_port *port) { - unsigned int msr; - unsigned int ret = 0; - - msr = sc16is7xx_port_read(port, SC16IS7XX_MSR_REG); - - ret |= (msr & SC16IS7XX_MSR_CTS_BIT) ? TIOCM_CTS : 0; - ret |= (msr & SC16IS7XX_MSR_DSR_BIT) ? TIOCM_DSR : 0; - ret |= (msr & SC16IS7XX_MSR_RI_BIT) ? TIOCM_RNG : 0; - ret |= (msr & SC16IS7XX_MSR_CD_BIT) ? TIOCM_CAR : 0; - return ret; + /* DCD and DSR are not wired and CTS/RTS is handled automatically + * so just indicate DSR and CAR asserted + */ + return TIOCM_DSR | TIOCM_CAR; } static void sc16is7xx_set_mctrl(struct uart_port *port, unsigned int mctrl) |