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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-05-29 08:18:15 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-05-29 08:18:15 +0200
commitaa668632ae8c25ffc2d94c865af099cca15944b4 (patch)
treef490dfa51fff3f1cd3b7de1ba4783d0abf37172b /drivers/tty/serdev
parentd087e7a991f1f61ee2c07db1be7c5cc2aa373f5d (diff)
parent5ed02dbb497422bf225783f46e6eadd237d23d6b (diff)
Merge 4.12-rc3 into tty-next
We need the tty fixes/changes here to handle future work. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serdev')
-rw-r--r--drivers/tty/serdev/core.c12
-rw-r--r--drivers/tty/serdev/serdev-ttyport.c21
2 files changed, 26 insertions, 7 deletions
diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
index 433de5ea9b02..f71b47334149 100644
--- a/drivers/tty/serdev/core.c
+++ b/drivers/tty/serdev/core.c
@@ -122,6 +122,18 @@ void serdev_device_write_wakeup(struct serdev_device *serdev)
}
EXPORT_SYMBOL_GPL(serdev_device_write_wakeup);
+int serdev_device_write_buf(struct serdev_device *serdev,
+ const unsigned char *buf, size_t count)
+{
+ struct serdev_controller *ctrl = serdev->ctrl;
+
+ if (!ctrl || !ctrl->ops->write_buf)
+ return -EINVAL;
+
+ return ctrl->ops->write_buf(ctrl, buf, count);
+}
+EXPORT_SYMBOL_GPL(serdev_device_write_buf);
+
int serdev_device_write(struct serdev_device *serdev,
const unsigned char *buf, size_t count,
unsigned long timeout)
diff --git a/drivers/tty/serdev/serdev-ttyport.c b/drivers/tty/serdev/serdev-ttyport.c
index 2cfdf34101f1..302018d67efa 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;
}