serdev: Make .remove in struct serdev_device_driver optional

Using devres infrastructure it is possible to write a serdev driver
that doesn't have any code that needs to be called as a part of
.remove. Add code to make .remove optional.

Cc: [email protected]
Cc: [email protected]
Cc: Rob Herring <[email protected]>
Cc: [email protected]
Cc: Guenter Roeck <[email protected]>
Cc: Lucas Stach <[email protected]>
Cc: Nikita Yushchenko <[email protected]>
Cc: Lee Jones <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Pavel Machek <[email protected]>
Cc: Andy Shevchenko <[email protected]>
Cc: Johan Hovold <[email protected]>
Cc: Sebastian Reichel <[email protected]>
Acked-by: Rob Herring <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Signed-off-by: Andrey Smirnov <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
index 1bef39828ca7..34050b439c1f 100644
--- a/drivers/tty/serdev/core.c
+++ b/drivers/tty/serdev/core.c
@@ -268,8 +268,8 @@ static int serdev_drv_probe(struct device *dev)
 static int serdev_drv_remove(struct device *dev)
 {
 	const struct serdev_device_driver *sdrv = to_serdev_device_driver(dev->driver);
-
-	sdrv->remove(to_serdev_device(dev));
+	if (sdrv->remove)
+		sdrv->remove(to_serdev_device(dev));
 	return 0;
 }