diff options
author | Peter Hurley <peter@hurleysoftware.com> | 2014-11-05 12:12:48 -0500 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-05 18:24:10 -0800 |
commit | 216030ec55e08646be629ee32725c0189ad74c9a (patch) | |
tree | e8ca124d3b1e01ce592a382572dd962317e3dd61 /drivers/tty/pty.c | |
parent | 5d93e748957336de1f28e7356bb43d6da01718bc (diff) |
tty: Check tty->count instead of TTY_CLOSING in tty_reopen()
Although perhaps not obvious, the TTY_CLOSING bit is set when the
tty count has been decremented to 0 (which occurs while holding
tty_lock). The only other case when tty count is 0 during a re-open
is when a legacy BSD pty master has been opened in parallel but
after the pty slave, which is unsupported and returns an error.
Thus !tty->count contains the complete set of degenerate conditions
under which a tty open fails.
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>
Diffstat (limited to 'drivers/tty/pty.c')
0 files changed, 0 insertions, 0 deletions