Input: silead - 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>
Cc: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230102181842.718010-60-jic23@kernel.orgSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/silead.c

@@ -736,7 +736,7 @@ static int silead_ts_probe(struct i2c_client *client)
 	return 0;
 }
 
-static int __maybe_unused silead_ts_suspend(struct device *dev)
+static int silead_ts_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 
@@ -745,7 +745,7 @@ static int __maybe_unused silead_ts_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused silead_ts_resume(struct device *dev)
+static int silead_ts_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	bool second_try = false;
@@ -784,7 +784,7 @@ static int __maybe_unused silead_ts_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(silead_ts_pm, silead_ts_suspend, silead_ts_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(silead_ts_pm, silead_ts_suspend, silead_ts_resume);
 
 static const struct i2c_device_id silead_ts_id[] = {
 	{ "gsl1680", 0 },
@@ -832,7 +832,7 @@ static struct i2c_driver silead_ts_driver = {
 		.name = SILEAD_TS_NAME,
 		.acpi_match_table = ACPI_PTR(silead_ts_acpi_match),
 		.of_match_table = of_match_ptr(silead_ts_of_match),
-		.pm = &silead_ts_pm,
+		.pm = pm_sleep_ptr(&silead_ts_pm),
 	},
 };
 module_i2c_driver(silead_ts_driver);