tree 42bc386bf53aa1dc7ec30fbab24f482fa31e4c2f
parent 9d69b4a72283a52a96a535c9d2da738980eede8c
author Nicolas Ferre <nicolas.ferre@microchip.com> 1581348053 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1582900968 +0100

tty/serial: atmel: manage shutdown in case of RS485 or ISO7816 mode

commit 04b5bfe3dc94e64d0590c54045815cb5183fb095 upstream.

In atmel_shutdown() we call atmel_stop_rx() and atmel_stop_tx() functions.
Prevent the rx restart that is implemented in RS485 or ISO7816 modes when
calling atmel_stop_tx() by using the atomic information tasklet_shutdown
that is already in place for this purpose.

Fixes: 98f2082c3ac4 ("tty/serial: atmel: enforce tasklet init and termination sequences")
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200210152053.8289-1-nicolas.ferre@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>