Re: [PATCH 6/6] serial: imx: do not set RS485 enabled if it is not supported

[Lino Sanfilippo]

On 29.09.23 07:51, Greg KH wrote:
> 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?
>

Right, it should be, I will correct this, thanks!