| commit | a358f0becce04eed99eb50111f4cc22b25792de8 | |
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Sun, 20 Jan 2019 09:46:58 +0000 (20 10:46 +0100) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Thu, 31 Jan 2019 07:13:43 +0000 (31 08:13 +0100) | ||
| tree | df66dce34ab8db66e12a1845f0e908a133d6fded | treesnapshot (tar.gz zip) |
| parent | 5e405657e13a69c260c532f7ecd02e975d49e6fc | commitdiff |
tty: Handle problem if line discipline does not have receive_buf
commit 27cfb3a53be46a54ec5e0bd04e51995b74c90343 upstream.
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>
commit 27cfb3a53be46a54ec5e0bd04e51995b74c90343 upstream.
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>
| drivers/tty/tty_io.c | diffblobblamehistory |