diff options
author | David S. Miller <davem@davemloft.net> | 2017-06-07 05:20:08 +0300 |
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committer | David S. Miller <davem@davemloft.net> | 2017-06-07 05:20:08 +0300 |
commit | 216fe8f021e33c36e3b27c49c9f1951f6b037d7f (patch) | |
tree | a43daec41b4d3955e7a4f8d0ed0654a7c80527ec /drivers/tty/serdev/serdev-ttyport.c | |
parent | 9747e2313838ee8f5d8073fd6aa7289255c3c51b (diff) | |
parent | b29794ec95c6856b316c2295904208bf11ffddd9 (diff) | |
download | linux-216fe8f021e33c36e3b27c49c9f1951f6b037d7f.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Just some simple overlapping changes in marvell PHY driver
and the DSA core code.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/tty/serdev/serdev-ttyport.c')
-rw-r--r-- | drivers/tty/serdev/serdev-ttyport.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/drivers/tty/serdev/serdev-ttyport.c b/drivers/tty/serdev/serdev-ttyport.c index 487c88f6aa0e..d0a021c93986 100644 --- a/drivers/tty/serdev/serdev-ttyport.c +++ b/drivers/tty/serdev/serdev-ttyport.c @@ -102,9 +102,6 @@ static int ttyport_open(struct serdev_controller *ctrl) return PTR_ERR(tty); serport->tty = tty; - serport->port->client_ops = &client_ops; - serport->port->client_data = ctrl; - if (tty->ops->open) tty->ops->open(serport->tty, NULL); else @@ -215,6 +212,7 @@ struct device *serdev_tty_port_register(struct tty_port *port, struct device *parent, struct tty_driver *drv, int idx) { + const struct tty_port_client_operations *old_ops; struct serdev_controller *ctrl; struct serport *serport; int ret; @@ -233,28 +231,37 @@ struct device *serdev_tty_port_register(struct tty_port *port, ctrl->ops = &ctrl_ops; + old_ops = port->client_ops; + port->client_ops = &client_ops; + port->client_data = ctrl; + ret = serdev_controller_add(ctrl); if (ret) - goto err_controller_put; + goto err_reset_data; dev_info(&ctrl->dev, "tty port %s%d registered\n", drv->name, idx); return &ctrl->dev; -err_controller_put: +err_reset_data: + port->client_data = NULL; + port->client_ops = old_ops; serdev_controller_put(ctrl); + return ERR_PTR(ret); } -void serdev_tty_port_unregister(struct tty_port *port) +int serdev_tty_port_unregister(struct tty_port *port) { struct serdev_controller *ctrl = port->client_data; struct serport *serport = serdev_controller_get_drvdata(ctrl); if (!serport) - return; + return -ENODEV; serdev_controller_remove(ctrl); port->client_ops = NULL; port->client_data = NULL; serdev_controller_put(ctrl); + + return 0; } |