Peter Hurley c274f6ef1c tty: Hold termios_rwsem for tcflow(TCIxxx) ...

While transmitting a START/STOP char for tcflow(TCION/TCIOFF), prevent
a termios change. Otherwise, a garbage in-band flow control char
may be sent, if the termios change overlaps the transmission setup.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2014-09-23 21:19:36 -07:00

31 KiB

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