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(parent: e8437d7) | patch
tty: Ensure single-threaded flip buffer consumer with mutex
authorPeter Hurley <peter@hurleysoftware.com>
Sat, 15 Jun 2013 13:36:10 +0000 (09:36 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 23 Jul 2013 23:47:09 +0000 (16:47 -0700)
commite9975fdec0138f1b2a85b9624e41660abd9865d4
tree6c90bac37cfe6843b4e78cb9280aa10524da351dtree | snapshot
parente8437d7ecbc50198705331449367d401ebb3181fcommit | diff
tty: Ensure single-threaded flip buffer consumer with mutex

The buffer work may race with parallel tty_buffer_flush. Use a
mutex to guarantee exclusive modify access to the head flip
buffer.

Remove the unneeded spin lock.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/dgrp/dgrp_tty.c diff | blob | history
drivers/tty/tty_buffer.c diff | blob | history
include/linux/tty.h diff | blob | history
John Crispins staging tree