tty_register_device_attr updated for tty-next

Added tty_device_create_release() and bound to dev->release in
tty_register_device_attr().
Added tty_port_register_device_attr() and used in uart_add_one_port()
instead of tty_register_device_attr().

Signed-off-by: Tomas Hlavacek <tmshlvck@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 24 insertions, 0 deletions

diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 96302f4c7079..d7bdd8d0c23f 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -73,6 +73,30 @@ struct device *tty_port_register_device(struct tty_port *port,
 }
 EXPORT_SYMBOL_GPL(tty_port_register_device);
 
+/**
+ * tty_port_register_device_attr - register tty device
+ * @port: tty_port of the device
+ * @driver: tty_driver for this device
+ * @index: index of the tty
+ * @device: parent if exists, otherwise NULL
+ * @drvdata: Driver data to be set to device.
+ * @attr_grp: Attribute group to be set on device.
+ *
+ * It is the same as tty_register_device_attr except the provided @port is
+ * linked to a concrete tty specified by @index. Use this or tty_port_install
+ * (or both). Call tty_port_link_device as a last resort.
+ */
+struct device *tty_port_register_device_attr(struct tty_port *port,
+                struct tty_driver *driver, unsigned index,
+                struct device *device, void *drvdata,
+                const struct attribute_group **attr_grp)
+{
+        tty_port_link_device(port, driver, index);
+        return tty_register_device_attr(driver, index, device, drvdata,
+                        attr_grp);
+}
+EXPORT_SYMBOL_GPL(tty_port_register_device_attr);
+
 int tty_port_alloc_xmit_buf(struct tty_port *port)
 {
         /* We may sleep in get_zeroed_page() */