clk: rs9: Convert to DEFINE_SIMPLE_DEV_PM_OPS()

Convert the Renesas 9-series PCIe clock generator driver from
SIMPLE_DEV_PM_OPS() to DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr().
This lets us drop the __maybe_unused annotations from its suspend and
resume callbacks, and reduces kernel size in case CONFIG_PM or
CONFIG_PM_SLEEP is disabled.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Brian Masney <bmasney@redhat.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: geertu

drivers/clk/clk-renesas-pcie.c

@@ -354,7 +354,7 @@ static int rs9_probe(struct i2c_client *client)
 	return ret;
 }
 
-static int __maybe_unused rs9_suspend(struct device *dev)
+static int rs9_suspend(struct device *dev)
 {
 	struct rs9_driver_data *rs9 = dev_get_drvdata(dev);
 
@@ -364,7 +364,7 @@ static int __maybe_unused rs9_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused rs9_resume(struct device *dev)
+static int rs9_resume(struct device *dev)
 {
 	struct rs9_driver_data *rs9 = dev_get_drvdata(dev);
 	int ret;
@@ -410,12 +410,12 @@ static const struct of_device_id clk_rs9_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, clk_rs9_of_match);
 
-static SIMPLE_DEV_PM_OPS(rs9_pm_ops, rs9_suspend, rs9_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(rs9_pm_ops, rs9_suspend, rs9_resume);
 
 static struct i2c_driver rs9_driver = {
 	.driver = {
 		.name = "clk-renesas-pcie-9series",
-		.pm	= &rs9_pm_ops,
+		.pm	= pm_sleep_ptr(&rs9_pm_ops),
 		.of_match_table = clk_rs9_of_match,
 	},
 	.probe		= rs9_probe,