From: Ilpo Järvinen ilpo.jarvinen@linux.intel.com
[ Upstream commit fd63031b8c0763addcecdefe0e0c59d49646204e ]
Only CS7 and CS8 seem supported but CSIZE is not sanitized to CS8 in the default: block.
Set CSIZE correctly so that userspace knows the effective value. Incorrect CSIZE also results in miscalculation of the frame bits in tty_get_char_size() or in its predecessor where the roughly the same code is directly within uart_update_timeout().
Fixes: 5930cb3511df (serial: driver for Conexant Digicolor USART) Acked-by: Baruch Siach baruch@tkos.co.il Signed-off-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Link: https://lore.kernel.org/r/20220519081808.3776-3-ilpo.jarvinen@linux.intel.co... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/tty/serial/digicolor-usart.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/tty/serial/digicolor-usart.c b/drivers/tty/serial/digicolor-usart.c index 794864fac625..74127813e6db 100644 --- a/drivers/tty/serial/digicolor-usart.c +++ b/drivers/tty/serial/digicolor-usart.c @@ -313,6 +313,8 @@ static void digicolor_uart_set_termios(struct uart_port *port, case CS8: default: config |= UA_CONFIG_CHAR_LEN; + termios->c_cflag &= ~CSIZE; + termios->c_cflag |= CS8; break; }