Input: kxtj9 - switch to DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr()

SIMPLE_DEV_PM_OPS() is deprecated as it requires explicit protection
against unused function warnings.  The new combination of pm_sleep_ptr()
and DEFINE_SIMPLE_DEV_PM_OPS() allows the compiler to see the functions,
thus suppressing the warning, but still allowing the unused code to be
removed. Thus also drop the __maybe_unused markings.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230102181842.718010-11-jic23@kernel.orgSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/misc/kxtj9.c

@@ -494,7 +494,7 @@ static int kxtj9_probe(struct i2c_client *client)
 	return 0;
 }
 
-static int __maybe_unused kxtj9_suspend(struct device *dev)
+static int kxtj9_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct kxtj9_data *tj9 = i2c_get_clientdata(client);
@@ -509,7 +509,7 @@ static int __maybe_unused kxtj9_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused kxtj9_resume(struct device *dev)
+static int kxtj9_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct kxtj9_data *tj9 = i2c_get_clientdata(client);
@@ -524,7 +524,7 @@ static int __maybe_unused kxtj9_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(kxtj9_pm_ops, kxtj9_suspend, kxtj9_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(kxtj9_pm_ops, kxtj9_suspend, kxtj9_resume);
 
 static const struct i2c_device_id kxtj9_id[] = {
 	{ NAME, 0 },
@@ -536,7 +536,7 @@ MODULE_DEVICE_TABLE(i2c, kxtj9_id);
 static struct i2c_driver kxtj9_driver = {
 	.driver = {
 		.name	= NAME,
-		.pm	= &kxtj9_pm_ops,
+		.pm	= pm_sleep_ptr(&kxtj9_pm_ops),
 	},
 	.probe_new	= kxtj9_probe,
 	.id_table	= kxtj9_id,