tree 8ae27402b9c4bac86e48597ec823ff119f75c165
parent 16f404e3666718917b2541503240cf8430aa49ff
author Peter Hurley <peter@hurleysoftware.com> 1409693957 -0400
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1410218562 -0700

serial: sunsab: Don't enable tx if tx stopped

The serial core may call the UART driver's start_tx() even if
tx is stopped; the UART driver must verify tx should be enabled
before transmitting.

Reported-by: Sam Ravnborg <sam@ravnborg.org>
cc: David S. Miller <davem@davemloft.net>
cc: <sparclinux@vger.kernel.org>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>