[PATCH 9/9] pcmcia: synclink_cs: Don't allow CS5-6

Ilpo Järvinen
2022-05-17T11:09:43Z

Only CS7 and CS8 seem supported but CSIZE was not sanitized in termios
c_cflag. The driver sets 7 bits whenever data_bits is not 8 so default
to CS7 when CSIZE is not CS8.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
drivers/char/pcmcia/synclink_cs.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 78baba55a8b5..d0572bbe8832 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -1418,7 +1418,11 @@ static void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty)
info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);

/* byte size and parity */
-
+ if ((cflag & CSIZE) != CS8) {
+ cflag &= ~CSIZE;
+ cflag |= CS7;
+ tty->termios.c_cflag = cflag;
+ }
info->params.data_bits = tty_get_char_size(cflag);

if (cflag & CSTOPB)
--
2.30.2