On Fri, Sep 29, 2023 at 12:12:46AM +0200, Lino Sanfilippo wrote: > From: Lino Sanfilippo <l.sanfilippo@xxxxxxxxxx> > > If the imx driver cannot support RS485 it sets the UARTS rs485_supported > structure to NULL. But it still calls uart_get_rs485_mode() which may set > the RS485_ENABLED flag. > The flag however is evaluated by the serial core in uart_configure_port() > at port startup and thus may lead to an attempt to configure RS485 even if > it is not supported. > > Avoid this by calling uart_get_rs485_mode() only if RS485 is actually > supported by the driver. Remove also a check for an error condition > that is not possible any more now. > > Signed-off-by: Lino Sanfilippo <l.sanfilippo@xxxxxxxxxx> > --- > drivers/tty/serial/imx.c | 14 ++++++-------- > 1 file changed, 6 insertions(+), 8 deletions(-) Why is this patch not marked for stable? thanks, greg k-h
