On Mon, 16 Mar 2015, Jakub Kicinski wrote: > From: Jakub Kicinski <kubakici@xxxxx> > > EFCR register contains RS-485 configuration which should not > be changed by shutdown. Instead of doing a write only update > the appropriate bits. > > Signed-off-by: Jakub Kicinski <kubakici@xxxxx> Signed-off-by: Jon Ringle <jringle@xxxxxxxxxxxxx> > --- > drivers/tty/serial/sc16is7xx.c | 8 +++++--- > 1 file changed, 5 insertions(+), 3 deletions(-) > > diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c > index 11bb44039a57..e6b396e584f3 100644 > --- a/drivers/tty/serial/sc16is7xx.c > +++ b/drivers/tty/serial/sc16is7xx.c > @@ -903,9 +903,11 @@ static void sc16is7xx_shutdown(struct uart_port *port) > /* Disable all interrupts */ > sc16is7xx_port_write(port, SC16IS7XX_IER_REG, 0); > /* Disable TX/RX */ > - sc16is7xx_port_write(port, SC16IS7XX_EFCR_REG, > - SC16IS7XX_EFCR_RXDISABLE_BIT | > - SC16IS7XX_EFCR_TXDISABLE_BIT); > + sc16is7xx_port_update(port, SC16IS7XX_EFCR_REG, > + SC16IS7XX_EFCR_RXDISABLE_BIT | > + SC16IS7XX_EFCR_TXDISABLE_BIT, > + SC16IS7XX_EFCR_RXDISABLE_BIT | > + SC16IS7XX_EFCR_TXDISABLE_BIT); > > sc16is7xx_power(port, 0); > } > -- > 2.1.0 > > -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
