[PATCH 5.10.y 1/5] tty: make tty_set_operations an inline

[Sasha Levin <sashal@kernel.org>]

From: Jiri Slaby <jslaby@suse.cz>

[ Upstream commit cb9ea618ee60313d9278b2ba75f56da2531c8cac ]

Since commit f34d7a5b7010 (tty: The big operations rework) in 2008,
tty_set_operations() is a simple one-line assignment. There is no reason
for this to be an exported function, hence move it to a header and make
an inline from that.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210723074317.32690-7-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: a916fa66a43e ("xhci: dbgtty: Fix unregister on tty_register_driver() failure")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/tty/tty_io.c       | 7 -------
 include/linux/tty_driver.h | 8 ++++++--
 2 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 984e3098e6317..e3ac7d084528f 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -3393,13 +3393,6 @@ void tty_driver_kref_put(struct tty_driver *driver)
 }
 EXPORT_SYMBOL(tty_driver_kref_put);
 
-void tty_set_operations(struct tty_driver *driver,
-			const struct tty_operations *op)
-{
-	driver->ops = op;
-};
-EXPORT_SYMBOL(tty_set_operations);
-
 void put_tty_driver(struct tty_driver *d)
 {
 	tty_driver_kref_put(d);
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index 2f719b471d524..05c1013aae94b 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -329,8 +329,6 @@ extern struct list_head tty_drivers;
 extern struct tty_driver *__tty_alloc_driver(unsigned int lines,
 		struct module *owner, unsigned long flags);
 extern void put_tty_driver(struct tty_driver *driver);
-extern void tty_set_operations(struct tty_driver *driver,
-			const struct tty_operations *op);
 extern struct tty_driver *tty_find_polling_driver(char *name, int *line);
 
 extern void tty_driver_kref_put(struct tty_driver *driver);
@@ -357,6 +355,12 @@ static inline struct tty_driver *tty_driver_kref_get(struct tty_driver *d)
 	return d;
 }
 
+static inline void tty_set_operations(struct tty_driver *driver,
+		const struct tty_operations *op)
+{
+	driver->ops = op;
+}
+
 /* tty driver magic number */
 #define TTY_DRIVER_MAGIC		0x5402
 
-- 
2.53.0