Changing the port closing_wait parameter is a privileged operation.
Add the missing check to TIOCSSERIAL so that -EPERM is returned in case
an unprivileged user tries to change the closing-wait setting.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
drivers/tty/amiserial.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 0c8157fab17f..ec6802ba2bf8 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -970,6 +970,7 @@ static int set_serial_info(struct tty_struct *tty, struct serial_struct *ss)
if (!serial_isroot()) {
if ((ss->baud_base != state->baud_base) ||
(ss->close_delay != port->close_delay) ||
+ (ss->closing_wait != port->closing_wait) ||
(ss->xmit_fifo_size != state->xmit_fifo_size) ||
((ss->flags & ~ASYNC_USR_MASK) !=
(port->flags & ~ASYNC_USR_MASK))) {
--
2.26.3
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