Greg Kroah-Hartman 27cfb3a53b tty: Handle problem if line discipline does not have receive_buf ...

Some tty line disciplines do not have a receive buf callback, so
properly check for that before calling it.  If they do not have this
callback, just eat the character quietly, as we can't fail this call.

Reported-by: Jann Horn <jannh@google.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-01-21 17:41:02 +01:00

85 KiB

Raw Blame History

View Raw