Multiple slave pty opens may be performed in parallel with the master open. Of course, all the slave opens will fail because the master pty is still locked but during this time the slave pty count will be artificially greater than 1. This is should not cause the master pty open to fail. Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx> --- drivers/tty/pty.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index 6eb3e80..7a18600 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -256,7 +256,7 @@ static int pty_open(struct tty_struct *tty, struct file *filp) goto out; if (test_bit(TTY_PTY_LOCK, &tty->link->flags)) goto out; - if (tty->link->count != 1) + if (tty->driver->subtype == PTY_TYPE_SLAVE && tty->link->count != 1) goto out; clear_bit(TTY_IO_ERROR, &tty->flags); -- 1.8.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
