| commit | c8483bc9deff9bf9118aaab2e840b973b75cac3e | [log] [tgz] |
|---|---|---|
| author | Peter Hurley <peter@hurleysoftware.com> | Wed Nov 05 12:12:45 2014 -0500 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Wed Nov 05 18:24:10 2014 -0800 |
| tree | 4c6af9da2f1b01525014c8680f4d3c8955b54e12 | |
| parent | 3ee175d9d9f9be0e345f7237ee921e58f68afdd7 [diff] |
tty: Invert tty_lock/ldisc_sem lock order Dropping the tty lock to acquire the tty->ldisc_sem allows several race conditions (such as hangup while changing the ldisc) which requires extra states and testing. The ldisc_sem->tty_lock lock order has not been required since tty buffer ownership was moved to tty_port. Reviewed-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>