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authorJohan Hovold <johan@kernel.org>2017-05-18 18:33:00 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-05-18 18:38:24 +0300
commit8cde11b2baa1d02eb2eb955dfd47d9f2a12f12cf (patch)
treefbe1c16cdebe360663da4943753be96e87c5a193 /include/linux/serdev.h
parent6bdc00d01e202ae11fa1cae0dacbef895434483d (diff)
downloadlinux-8cde11b2baa1d02eb2eb955dfd47d9f2a12f12cf.tar.xz
tty/serdev: add serdev registration interface
Add a new interface for registering a serdev controller and clients, and a helper function to deregister serdev devices (or a tty device) that were previously registered using the new interface. Once every driver currently using the tty_port_register_device() helpers have been vetted and converted to use the new serdev registration interface (at least for deregistration), we can move serdev registration to the current helpers and get rid of the serdev-specific functions. Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/serdev.h')
-rw-r--r--include/linux/serdev.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/serdev.h b/include/linux/serdev.h
index e2a225bf716d..e69402d4a8ae 100644
--- a/include/linux/serdev.h
+++ b/include/linux/serdev.h
@@ -308,7 +308,7 @@ struct tty_driver;
struct device *serdev_tty_port_register(struct tty_port *port,
struct device *parent,
struct tty_driver *drv, int idx);
-void serdev_tty_port_unregister(struct tty_port *port);
+int serdev_tty_port_unregister(struct tty_port *port);
#else
static inline struct device *serdev_tty_port_register(struct tty_port *port,
struct device *parent,
@@ -316,7 +316,10 @@ static inline struct device *serdev_tty_port_register(struct tty_port *port,
{
return ERR_PTR(-ENODEV);
}
-static inline void serdev_tty_port_unregister(struct tty_port *port) {}
+static inline int serdev_tty_port_unregister(struct tty_port *port)
+{
+ return -ENODEV;
+}
#endif /* CONFIG_SERIAL_DEV_CTRL_TTYPORT */
#endif /*_LINUX_SERDEV_H */